The revenue from selling x shirts is r(x) = 11x.The cost of buying x shirts is c(x) = 6x + 20.The profit from selling x shirts is p(x) = r(x) – c(x).What is p(x)?MULTIPLE CHOICE: A. p(x) = 17x + 20 B. p(x) = 17x – 20 C. p(x) = 5x + 20 D. p(x) = 5x – 20
Accepted Solution
A:
The answer is: [D]: "p(x) = 5x – 20" . _____________________________________ Explanation: _____________________________________ "What is p(x) ? " _____________________________________ "p(x) = r(x) – c(x)" _____________________________________ r(x) = 11x ;
c(x) = 6x + 20 ;
p(x) = 11x – (6x + 20)
= 11x – 1(6x + 20)
= 11x – (1*6x) + (-1* 20)
= 11x – 6x + (-20)
= 11x – 6x – 20
= 5x – 20 ;
p(x) = 5x – 20 ; which is: "Answer choice: [D]" . ________________________________________