a shoe store estimates a certain line of dress shoes has cos

a shoe store estimates a certain line of dress shoes has costs given by C(x)=1500+30x+0.05x^2. The store charges $75 per pair.

a. What is the avg. cost function?

b. What is demand function?

c. What is revenue function?

d. What is profit function?

avg cost function = 1500/x + 30 +0.05x demand function d = 75x revenue function r = 75x profit = 0.05x^2 -45x +1500