The revenue from selling x shirts is r(x) = 15x.
The cost of buying x shirts is c(x) = 7x + 20.
The profit from selling x shirts is p(x) = r(x) – c(x).
What is p(x)?
A. p(x) = 22x – 20
B. p(x) = 22x + 20
C. p(x) = 8x – 20
D. p(x) = 8x + 20
p(x) = r(x) - c(x)
p(x) = 15x - (7x + 20)
p(x) = 15x - 7x - 20
p(x) = 8x - 20
Therefore, the correct answer is:
C. p(x) = 8x - 20