Question

The revenue from selling xshirts is r(x) = 12x.

The cost of buying x shirts is c(x) = 5x + 20

The profit from selling x shirts is p(x) = r(x)-c(x).

What is P(x)?

A. p(x)=7x+20
B. p(x)=17x-20
C. p(x)=17x+20
D. p(x)=7x-20​

Answer 1

D.
`p(x)=7x-20`

Explanation:

`r(x) = 12x\\c(x) = 5x + 20\\p(x) = r(x)-c(x)\\p(x)=12x-(5x+20)\\p(x)=12x-5x-20\\p(x)=7x-20`

Simply subtract the two functions from each other and simplify to get the result.