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) 11. Which of the following is not rational expressions? 2d C. 5 2x+6 D. x+1 A. m? B. V4mn

) 11. Which of the following is not rational expressions? 2d C. 5 2x+6 D. x+1 A. m? B. V4mn

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.2: Exponents And Radicals
Problem 92E
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) 11. Which of the following is not rational expressions? 2d C. 5 ) 12. The average amount of a customer's purchase P applied to a credit card account at a toy store 2x+6 D. x+1 A. m? B. V4mn 2400+80 z during the period 1998 - 2004 can be modeled by P = 50 + 2 , where x is the number of years since 1998. Which expression shows how to compute the average amount of a customer's purchase in 2003? A. 2400+80 5) :400+80 (10) s0 + 2(5;: = 45.71 50+2(10) B. 400+80 (5): 50 +2(5)= 2400+(400 )- 50+10 = 26.67 C 400+80 (5; 50 + 2(5) 2400+80 (5) 2400+80 (25 = 44 50+2(25) D. 2400+80 (25) = 3.38 5o - 2(5) 50+2(25) 2(x- 5) 13. Dan simplified (x-5)(x+2) 2(x-5) 2(x-5) %3D (x-5)(x+2) (s*-5)(x+2) x+2 x+1 Clarisse said the way Dan simplified the rational algebraic expression is incorrect. What part of the solution of Dan is incorrect? 1 A. The final answer should be since %3D *+1 1 B. The final answer should be x since =x. x+1 C. In it is incorrect to cancel 2 in the numerator and denominator since both are not factors. Thus, the final answer is D. There is nothing wrong with the way Dan simplified the rational algebraic expression.
Transcribed Image Text:) 11. Which of the following is not rational expressions? 2d C. 5 ) 12. The average amount of a customer's purchase P applied to a credit card account at a toy store 2x+6 D. x+1 A. m? B. V4mn 2400+80 z during the period 1998 - 2004 can be modeled by P = 50 + 2 , where x is the number of years since 1998. Which expression shows how to compute the average amount of a customer's purchase in 2003? A. 2400+80 5) :400+80 (10) s0 + 2(5;: = 45.71 50+2(10) B. 400+80 (5): 50 +2(5)= 2400+(400 )- 50+10 = 26.67 C 400+80 (5; 50 + 2(5) 2400+80 (5) 2400+80 (25 = 44 50+2(25) D. 2400+80 (25) = 3.38 5o - 2(5) 50+2(25) 2(x- 5) 13. Dan simplified (x-5)(x+2) 2(x-5) 2(x-5) %3D (x-5)(x+2) (s*-5)(x+2) x+2 x+1 Clarisse said the way Dan simplified the rational algebraic expression is incorrect. What part of the solution of Dan is incorrect? 1 A. The final answer should be since %3D *+1 1 B. The final answer should be x since =x. x+1 C. In it is incorrect to cancel 2 in the numerator and denominator since both are not factors. Thus, the final answer is D. There is nothing wrong with the way Dan simplified the rational algebraic expression.
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