Solve: 2cos (x) + sqrt2 = 0 for 0 <= x <= 2pi. Chech all that apply. 3pi/4. 5pi/4. Solve: tan (x) - cos^2 (x) = sin^2 (x) [A] pi/4 + kpi. The motion of a weight that hangs from a spring is represented by the equation h = 8sin ( 2pi/3 t). It models the weight's height (in inches) above or below the rest position as a function of time (in seconds ...Simplify each expression. - 2650912. use the quadratic formula to solve the quadratic equation:a²+11a-12=0To calculate a determinant you need to do the following steps. Set the matrix (must be square). Reduce this matrix to row echelon form using elementary row operations so that all the elements below diagonal are zero. Multiply the main diagonal elements of the matrix - determinant is calculated. To understand determinant calculation better input ... A determinant is a property of a square matrix. The value of the determinant has many implications for the matrix. A determinant of 0 implies that the matrix is singular, and thus not invertible. A system of linear equations can be solved by creating a matrix out of the coefficients and taking the determinant; this method is called Cramer's ... Find the product es001-1.jpg on E.D.G 8/6n-4 *(9n2-4) ... Find the length of each side of a square plot having perimeter 172 m Find the place value of 1 in 915,342,76 ...Divide each term in by . ... Rewrite the expression. Step 7.3.5.5. Evaluate the exponent. ... Step 7.5.1. Combine using the product rule for radicals.Evaluate each expression if a = 4, b = 6, and c = 8. 8b í a 62/87,21 Replace b with 6 and a with 4. 2a + (b2 · 3) 62/87,21 Replace a with 4 and b with 6. 62/87,21 Replace a with 4 and b with 6. BOOKS Akira bought one new book for $20 and three used books for $4.95 each. Write and evaluate an expression to find how much money the books cost ...CH3OH(l) mc015-1.jpg CH3OH(aq) K3PO4(s) mc015-2.jpg 3K+(aq) + Please help me simplify these following mixed radicals:: and show me how you did it cause I need to learn : I don't know how to I need some help with a handful of questions.In Mathematics, alphabets or letters referred to as variables are used to denoted the missing values in an algebraic expression. Thus, we would solve for the unknown variables as follows: Lowest common multiple ( LCM) =. Taking the LCM of the left-hand side, we have: By comparison, we have: a = 3. b = 4. Therefore, the missing values are 3 and ...1. Substitute the values for the variables. we plug in -1 for x and 3 for y. 2. Identify grouping symbols, beginning with the innermost symbols. We take exponent and then we multiply . 3. Determine and apply the rules of exponents to simplify (-1)^4 = -1 * -1 * -1 * -1 = 1 (3)^3 = 3*3*3= 27. 4. Evaluate. 162. The value of the expression is 162richard bought 3 slices of cheese pizza and 2 sodas for $8.75. Jordan bought 2 slices of cheese pizza and 4 sodas for $8.50. How much would an order of 1 slice of cheese pizza and 3 sodas cost? A. $3.25 B. $5.25 C. $7.75 D. $7.25Evaluate this (-1/5)^2. Help! 4/5x - 1/4x = 11 -0.65x + 0.45x = 5.4 (answer must fit the layout) which place do I use to compare 60,618 and 60,647? Evaluate the expression when =x−7 and =y2 . −x6y.Answer to Identify each of the following as rational or irrational. square root of 23 104.42 square root of 64 49.39overline 6 10.97846727460Answer to Identify each of the following as rational or irrational. square root of 23 104.42 square root of 64 49.39overline 6 10.97846727460The products of numbers or expressions is calculated by multiplying the numbers or expressions. The simplified product of is . How to determine the simplified product? The product is given as: Express 64 as 4^3. Express x^9 as (x^3)^3. Evaluate the cube roots. Express x^5 as x^3 * x^2. Evaluate the cube root. Multiply. Hence, the simplified ...Apr 24, 2020 · Equivalent expressions are expressions that work the same even though they look different. According to the given question. We have a statement " 36 superscript negative one haft". The mathematical expression for the above statement is . The above mathematical expression can be written as. Therefore, the equivalent expression for is given by Feb 23, 2020 · Simplify each expression. - 2650912 ... Simplify each expression. mc001-1.jpg See answer Advertisement Advertisement shekinahdawne shekinahdawne =tjk 89 because it is ... Jan 7, 2021 · richard bought 3 slices of cheese pizza and 2 sodas for $8.75. Jordan bought 2 slices of cheese pizza and 4 sodas for $8.50. How much would an order of 1 slice of cheese pizza and 3 sodas cost? A. $3.25 B. $5.25 C. $7.75 D. $7.25 A. Solve: 3 ln x = ln 216. B. Identify the solution set of 3 ln 4 = 2 ln x. C 8. Identify the solution set of 6 ln e = eln 2x. B 3. A town predicts that its population will double in es001-1.jpg years. Simplify the expression.Solve: 2cos (x) + sqrt2 = 0 for 0 <= x <= 2pi. Chech all that apply. 3pi/4. 5pi/4. Solve: tan (x) - cos^2 (x) = sin^2 (x) [A] pi/4 + kpi. The motion of a weight that hangs from a spring is represented by the equation h = 8sin ( 2pi/3 t). It models the weight's height (in inches) above or below the rest position as a function of time (in seconds ...The products of numbers or expressions is calculated by multiplying the numbers or expressions. The simplified product of is . How to determine the simplified product? The product is given as: Express 64 as 4^3. Express x^9 as (x^3)^3. Evaluate the cube roots. Express x^5 as x^3 * x^2. Evaluate the cube root. Multiply. Hence, the simplified ...Polynomial Division Calculator. Step 1: Enter the expression you want to divide into the editor. The polynomial division calculator allows you to take a simple or complex expression and find the quotient and remainder instantly. Step 2: Click the blue arrow to submit and see the result!richard bought 3 slices of cheese pizza and 2 sodas for $8.75. Jordan bought 2 slices of cheese pizza and 4 sodas for $8.50. How much would an order of 1 slice of cheese pizza and 3 sodas cost? A. $3.25 B. $5.25 C. $7.75 D. $7.25Equivalent expressions are expressions that work the same even though they look different. According to the given question. We have a statement " 36 superscript negative one haft". The mathematical expression for the above statement is . The above mathematical expression can be written as. Therefore, the equivalent expression for is given byStudy with Quizlet and memorize flashcards containing terms like Which graph shows the solution to the equation 4x - 3 = 8?, To solve e4 - 3x = mr001-1.jpgx + 9 by graphing, which equations should be graphed?, Complete the steps to solve the equation 4e2 + 2x = x − 3 by graphing.Notice that [latex]x+1[/latex] is a common factor to the numerator and the denominator. The zero of this factor, [latex]x=-1[/latex], is the location of the removable discontinuity. Notice also that [latex]x - 3[/latex] is not a factor in both the numerator and denominator. The zero of this factor, [latex]x=3[/latex], is the vertical asymptote. Jul 11, 2015 · This is the beginning of Order of Operations. We do parentheses first, then multiplying or dividing next (from left to right), then addition and subtraction ... Evaluate each expression if a = 4, b = 6, and c = 8. 8b í a 62/87,21 Replace b with 6 and a with 4. 2a + (b2 · 3) 62/87,21 Replace a with 4 and b with 6. 62/87,21 Replace a with 4 and b with 6. BOOKS Akira bought one new book for $20 and three used books for $4.95 each. Write and evaluate an expression to find how much money the books cost ... We would like to show you a description here but the site won’t allow us. Fresh features from the #1 AI-enhanced learning platform. Explore the lineup Fresh features from the #1 AI-enhanced learning platform Crush your year with the magic of personalized studying.1. Substitute the values for the variables. we plug in -1 for x and 3 for y. 2. Identify grouping symbols, beginning with the innermost symbols. We take exponent and then we multiply . 3. Determine and apply the rules of exponents to simplify (-1)^4 = -1 * -1 * -1 * -1 = 1 (3)^3 = 3*3*3= 27. 4. Evaluate. 162. The value of the expression is 162The given expression is a sum of two cubes. The factorization of the given expression is . Given: The given identity is, . It is required to factorize using the given identity. The given expression can be written in the form of sum of two cubes as, Here, a and b are and respectively. Now, the factorization of the given expression can be one as,Mar 26, 2018 · The power of half, shows the radical surd form of a number. To eliminate this fractional power, square both the sides. Solve the equation further as, Thus to complete the work first subtract with 5 both side of expression, then square both side to find the possible solution of equation which is 14. Learn more about the radical surd here; We write numbers in exponent form because it is more compact to write repetitive multiplications a large number of times.It defines how many times a number is being multiplied to it self. We know exponents describe how many times a number is repetitively multiplied by itself. Given 27^2/27^4/3 which can be written as which is = .richard bought 3 slices of cheese pizza and 2 sodas for $8.75. Jordan bought 2 slices of cheese pizza and 4 sodas for $8.50. How much would an order of 1 slice of cheese pizza and 3 sodas cost? A. $3.25 B. $5.25 C. $7.75 D. $7.25The power of half, shows the radical surd form of a number. To eliminate this fractional power, square both the sides. Solve the equation further as, Thus to complete the work first subtract with 5 both side of expression, then square both side to find the possible solution of equation which is 14. Learn more about the radical surd here;richard bought 3 slices of cheese pizza and 2 sodas for $8.75. Jordan bought 2 slices of cheese pizza and 4 sodas for $8.50. How much would an order of 1 slice of cheese pizza and 3 sodas cost? A. $3.25 B. $5.25 C. $7.75 D. $7.25The power of half, shows the radical surd form of a number. To eliminate this fractional power, square both the sides. Solve the equation further as, Thus to complete the work first subtract with 5 both side of expression, then square both side to find the possible solution of equation which is 14. Learn more about the radical surd here;The first step is to change the equations into y format. y= mx + b. The y- intercept of this graph is at the point (0,2). Since the line is going down, the slope is negative.In the video below we show another example of how to use the order of operations to simplify an expression that contains exponents and grouping symbols. Simplify: 23 +34 ÷3−52 2 3 + 3 4 ÷ 3 − 5 2. If an expression has several exponents, they may be simplified in the same step. Simplify exponents. Divide.The power of half, shows the radical surd form of a number. To eliminate this fractional power, square both the sides. Solve the equation further as, Thus to complete the work first subtract with 5 both side of expression, then square both side to find the possible solution of equation which is 14. Learn more about the radical surd here;2. Which least 6-digit number is exactly divisible by 75? The product of ages of all Mr. products children is 1408 the age of the youngest child is equal to half the age of the oldest child how many children. The first term of an A.P. is 3, the last term 90 and the sum 1395. find the number of term .First go to the Algebra Calculator main page. Type the following: First type the expression 2x. Then type the @ symbol. Then type x=3. Try it now: 2x @ x=3 Clickable Demo Try entering 2x @ x=3 into the text box. After you enter the expression, Algebra Calculator will evaluate 2x for x=3: 2 (3) = 6. More ExamplesAlgebra 2 Module 1 Review. How can the order of operations be used to simplify expressions? By providing a set of rules on how to follow a foolproof order of operations when evaluating expressions, ensuring that everyone gets to the same answer once the expression is simplified.Customize your avatar with a never-ending variety of clothing options, accessories, gear, and more!Study with Quizlet and memorize flashcards containing terms like How will this system at equilibrium be affected by each of the conditions stated here? es001-1.jpg removal of H2O addition of O2 decrease in pressure increase in temperature, Which contain a common ion that will shift the equilibrium system represented by the equation shown? Select all that apply. How will the addition of HCl ... 2 times 8 is 16. Finally, evaluate the subtraction. 9 minus 16 is -7. The expression simplifies to -7. Report an issue with this question. Find the value of this expression. RATIONALE. To solve this expression, evaluate the exponent for each term. Start with the first term,. Any number taken to the power of zero equals 1, soterm,. is equal to 1. Jan 23, 2017 · A composite functions is gotten from the combination of two or more functions. Given that: This is calculated as follows: Calculate r (4) and s (4) So, we have: This is calculated as follows: Calculate r (3) and s (3) So, we have: Read more about composite functions at: While we can compose the functions for each individual input value, it is sometimes helpful to find a single formula that will calculate the result of a composition f (g(x)) f ( g ( x)). To do this, we will extend our idea of function evaluation. Recall that, when we evaluate a function like f (t) = t2 −t f ( t) = t 2 − t, we substitute the ... What is the simplest form of mc001-1.jpg. (A) sqrt 2. Which expression should you multiply the numerator and denominator of mc001-1.jpg by to rationalize the denominator? C. What is mc002-1.jpg in simplest form? A. What is the simplest form of mc001-1.jpg. D. The gravitational force formula is mc001-1.jpg where F is the force between two ...richard bought 3 slices of cheese pizza and 2 sodas for $8.75. Jordan bought 2 slices of cheese pizza and 4 sodas for $8.50. How much would an order of 1 slice of cheese pizza and 3 sodas cost? A. $3.25 B. $5.25 C. $7.75 D. $7.25Study with Quizlet and memorize flashcards containing terms like How will this system at equilibrium be affected by each of the conditions stated here? es001-1.jpg removal of H2O addition of O2 decrease in pressure increase in temperature, Which contain a common ion that will shift the equilibrium system represented by the equation shown? Select all that apply. How will the addition of HCl ...Equivalent expressions are expressions that work the same even though they look different. According to the given question. We have a statement " 36 superscript negative one haft". The mathematical expression for the above statement is . The above mathematical expression can be written as. Therefore, the equivalent expression for is given byStudy with Quizlet and memorize flashcards containing terms like Evaluate the given expression. 10 C 4 * 4 C 2 a. 1,260 c. 1,275 b. 1,278 d. 1,270, Compute the following: 7!/3! a. 1680 b. 840 c. 21 d. 4, Compute the following. 325 C 1 a. 325 b. 324 c. 1 d. 326 and more. Answer: Step-by-step explanation: The picture helps a lot in understanding what the problem is. I could not understand what you typed. OK, I can evaluate these log expressions.Use the equation es001-1.jpg how many potential solutions are there? Once you've done this, simplify using the order of operations. Evaluate each expression. es001-1.jpg - Brainly.in. Evaluate each expression. es001-1.jpgLarry's pet store made $30 before a pipe burst and he had to close early to get it fixed. He realized that he lost es001-1.jpg of a dollar each hour that the store was closed. If the expression that models this situation is 30 es001-2.jpg, what is Larry's profit if the store was closed for 8 hours? $ Basic Math. Math Calculator. Step 1: Enter the expression you want to evaluate. The Math Calculator will evaluate your problem down to a final solution. You can also add, subtraction, multiply, and divide and complete any arithmetic you need. Step 2: Click the blue arrow to submit and see your result! The expression simplified by the student is an indicinal expression. Indices are mathematical expressions that show the number of times a number or variable is being multiplied by itself. According to the law of indices. where a, and n are integers or fractions. Given the expression simplified by the student expressed as: Using the laws above:Solve: 2cos (x) + sqrt2 = 0 for 0 <= x <= 2pi. Chech all that apply. 3pi/4. 5pi/4. Solve: tan (x) - cos^2 (x) = sin^2 (x) [A] pi/4 + kpi. The motion of a weight that hangs from a spring is represented by the equation h = 8sin ( 2pi/3 t). It models the weight's height (in inches) above or below the rest position as a function of time (in seconds ...Jan 6, 2022 · Evaluate the numerical value of the vertical velocity of the car at time t=0. 25s using the expression from pa ... es001-1. Jpg for each given angle, es001-2. ... A composite functions is gotten from the combination of two or more functions. Given that: This is calculated as follows: Calculate r (4) and s (4) So, we have: This is calculated as follows: Calculate r (3) and s (3) So, we have: Read more about composite functions at:Polynomial Division Calculator. Step 1: Enter the expression you want to divide into the editor. The polynomial division calculator allows you to take a simple or complex expression and find the quotient and remainder instantly. Step 2: Click the blue arrow to submit and see the result! richard bought 3 slices of cheese pizza and 2 sodas for $8.75. Jordan bought 2 slices of cheese pizza and 4 sodas for $8.50. How much would an order of 1 slice of cheese pizza and 3 sodas cost? A. $3.25 B. $5.25 C. $7.75 D. $7.25Larry's pet store made $30 before a pipe burst and he had to close early to get it fixed. He realized that he lost es001-1.jpg of a dollar each hour that the store was closed. If the expression that models this situation is 30 es001-2.jpg, what is Larry's profit if the store was closed for 8 hours? $Contact Us: [email protected]. Call Us At: 785.690.7081 Ext.453Jul 8, 2019 · richard bought 3 slices of cheese pizza and 2 sodas for $8.75. Jordan bought 2 slices of cheese pizza and 4 sodas for $8.50. How much would an order of 1 slice of cheese pizza and 3 sodas cost? A. $3.25 B. $5.25 C. $7.75 D. $7.25 Nov 11, 2016 · Verified answer. 1.) Evaluate the indicated function, where f (x) = x2 − 8x + 3and g (x) = 7x − 5. (f + g) (5)= 2.) Evaluate the indicated function, where f (x) = x2 − 7x + 4 and g (x) = 6x − 7. (f + g) (1/2)= 3.) Evaluate the indicated function, where f (x) = x2 − 3x + 4 and g (x) = 4x − 2. (f − g) (−1)= 4.) How to Determine an Odd Function. Important Tips to Remember: If ever you arrive at a different function after evaluating [latex]\color{red}–x[/latex] into the given [latex]f\left( x \right)[/latex], immediately try to factor out [latex]−1[/latex] from it and observe if the original function shows up. May 2, 2022 · exercise 2.3.10. Evaluate: 5x − 2y − 9 when x = 7 and y = 8. Answer. Example 2.3.6: evaluate. Evaluate 2x2 + 3x + 8 when x = 4. Solution. We need to be careful when an expression has a variable with an exponent. In this expression, 2x2 means 2 ∙ x ∙ x and is different from the expression (2x)2, which means 2x ∙ 2x. Jun 24, 2020 · The expression can be written as: We know that cube root can also be written as the power of 1/3, So. Multiplying the power with both variables. Simplifying the equation to get final form. As we can see that it is similar to the option B which is. B) x superscript five-thirds Baseline y superscript one- third. the correct option is B To calculate a determinant you need to do the following steps. Set the matrix (must be square). Reduce this matrix to row echelon form using elementary row operations so that all the elements below diagonal are zero. Multiply the main diagonal elements of the matrix - determinant is calculated. To understand determinant calculation better input ... About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...Then evaluate each expression if r 2, s 5, and t 1 2 . (Lesson 1-2) 53. r squared increased by 3 times s 54. t times the sum of four times s and r 55. the sum of r and s times the square of t 56. r to the fifth power decreased by t Evaluate each expression. (Lesson 1-2) 57. 53 3(42) 58. 38 2 1 1 3 2 59. Contact Us: [email protected]. Call Us At: 785.690.7081 Ext.453Identify the reference angle es001-1. Jpg for each given angle, es001-2. Jpg. Es001-3. Jpg degrees. Es002-1. Jpg degrees. Es003-1. Jpg degrees.10 Multi-Language Glossary atChapter 1 Numerical Expressions and Factors 1.2 Lesson BigIdeasMath.com Key Vocabulary numerical expression, p. 10 evaluate, p. 10 order of operations, p. 10 a. Evaluate 12 − 2 × 4. 12 − 2 × 4 = 12 − 8 Multiply 2 and 4. = 4 Subtract 8 from 12. b. Evaluate 60 ÷ [(4 + 2) × 5].The power of half, shows the radical surd form of a number. To eliminate this fractional power, square both the sides. Solve the equation further as, Thus to complete the work first subtract with 5 both side of expression, then square both side to find the possible solution of equation which is 14. Learn more about the radical surd here;Study with Quizlet and memorize flashcards containing terms like How will this system at equilibrium be affected by each of the conditions stated here? es001-1.jpg removal of H2O addition of O2 decrease in pressure increase in temperature, Which contain a common ion that will shift the equilibrium system represented by the equation shown? Select all that apply. How will the addition of HCl ... exercise 2.3.10. Evaluate: 5x − 2y − 9 when x = 7 and y = 8. Answer. Example 2.3.6: evaluate. Evaluate 2x2 + 3x + 8 when x = 4. Solution. We need to be careful when an expression has a variable with an exponent. In this expression, 2x2 means 2 ∙ x ∙ x and is different from the expression (2x)2, which means 2x ∙ 2x.The order of operations is used to evaluate and simplify composite functions, working from the inside out by substituting one function in place of the variable for another funtion. Steps outlined to algebraically find the inverse function: Substitute f (x) with y. Reverse the x and y variables. Solve for y. Replace y with the inverse notation f ...a circular oil spill continues to increase in size. the radius of the oil spill, in miles, is given by the function r(t) = 0.5 + 2t, where t is the time in hours. the area of the circular region is given by the function a(r) = πr2, where r is the radius of the circle at time t.Use the given graph to determine if there are any solutions to the equation − (5)3 − x + 4 = −2x. A. The solution is approximately 1.7 because it is the x-value of the intersection of the functions. We have an expert-written solution to this problem! Find the solutions to the equation 102x + 11 = (x + 6)2 - 2.Dilation - stretching or compressing the graph of a function. Move the slider on the graph to graph each function and describe the transformation. y=2_/x. vertical stretch. y=0.5_/x. vertical compression. Which of the following statements are true? Check all of the boxes that apply. A.
Identify the reference angle es001-1. Jpg for each given angle, es001-2. Jpg. Es001-3. Jpg degrees. Es002-1. Jpg degrees. Es003-1. Jpg degrees.. Chef tampercent27s underground cafe
While we can compose the functions for each individual input value, it is sometimes helpful to find a single formula that will calculate the result of a composition f (g(x)) f ( g ( x)). To do this, we will extend our idea of function evaluation. Recall that, when we evaluate a function like f (t) = t2 −t f ( t) = t 2 − t, we substitute the ...The given expression is a sum of two cubes. The factorization of the given expression is . Given: The given identity is, . It is required to factorize using the given identity. The given expression can be written in the form of sum of two cubes as, Here, a and b are and respectively. Now, the factorization of the given expression can be one as,What is the simplest form of mc001-1.jpg. (A) sqrt 2. Which expression should you multiply the numerator and denominator of mc001-1.jpg by to rationalize the denominator? C. What is mc002-1.jpg in simplest form? A. What is the simplest form of mc001-1.jpg. D. The gravitational force formula is mc001-1.jpg where F is the force between two ... Apr 10, 2017 · richard bought 3 slices of cheese pizza and 2 sodas for $8.75. Jordan bought 2 slices of cheese pizza and 4 sodas for $8.50. How much would an order of 1 slice of cheese pizza and 3 sodas cost? A. $3.25 B. $5.25 C. $7.75 D. $7.25 Do not find the value of this expression. Read the Lesson 1. There is a customary order for grouping symbols. Brackets are used outside of parentheses. Braces are used outside of brackets. Identify the innermost expression(s) in each of the following expressions. a. [(3 2 2) 8] 4]} 2 2) b. 9 [5(8 6) 2(10 7)] (8 6) and (10 7) c. {14 [8 (3 12) 2 ... Dilation - stretching or compressing the graph of a function. Move the slider on the graph to graph each function and describe the transformation. y=2_/x. vertical stretch. y=0.5_/x. vertical compression. Which of the following statements are true? Check all of the boxes that apply. A. In the video below we show another example of how to use the order of operations to simplify an expression that contains exponents and grouping symbols. Simplify: 23 +34 ÷3−52 2 3 + 3 4 ÷ 3 − 5 2. If an expression has several exponents, they may be simplified in the same step. Simplify exponents. Divide. Study with Quizlet and memorize flashcards containing terms like Which graph shows the solution to the equation 4x - 3 = 8?, To solve e4 - 3x = mr001-1.jpgx + 9 by graphing, which equations should be graphed?, Complete the steps to solve the equation 4e2 + 2x = x − 3 by graphing.Notice that [latex]x+1[/latex] is a common factor to the numerator and the denominator. The zero of this factor, [latex]x=-1[/latex], is the location of the removable discontinuity. Notice also that [latex]x - 3[/latex] is not a factor in both the numerator and denominator. The zero of this factor, [latex]x=3[/latex], is the vertical asymptote.a circular oil spill continues to increase in size. the radius of the oil spill, in miles, is given by the function r(t) = 0.5 + 2t, where t is the time in hours. the area of the circular region is given by the function a(r) = πr2, where r is the radius of the circle at time t.Oct 5, 2020 · Answer: (Question 1) a= 10 b= 6 (Question 2) a= 2 b= 3 c= 8. Step-by-step explanation: Edgenuity 2021 (Simplifying Products and Quotients of Powers) Evaluate each expression if a = 4, b = 6, and c = 8. 8b í a 62/87,21 Replace b with 6 and a with 4. 2a + (b2 · 3) 62/87,21 Replace a with 4 and b with 6. 62/87,21 Replace a with 4 and b with 6. BOOKS Akira bought one new book for $20 and three used books for $4.95 each. Write and evaluate an expression to find how much money the books cost ....