The revenue from selling x shirts is f(x) = 12x.
The cost of buying x shirts is c(x) = 5x + 20.
The profit from selling x shirts is p(x) = f(x) - (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

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

The answer is c. 7 (i think) i’m almost sure though