The following exercise gives you experience in using the cost and revenue functions to find the break-even point. (See Example 4.) Austin Avenue Clothiers pays $53 each for sports coats and has a fixed monthly cost of $790. The store sells the coats for $74 each.
(a) What is the linear cost-volume function C(x)?
C(x) = 53x+790
Correct: Your answer is correct.

(b) What is the linear revenue function R(x)?
R(x) = 74x
Correct: Your answer is correct.

(c) What is the break-even number of coats? (Round your answer up to the nearest whole number.)
coats