Brandon is selling t-shirts at a discount for bulk purchases. He has fixed costs of $12,400 and variable cost per unit of $0.80x+112 dollars, where x is the total number of t-shirts produced. Suppose further that the selling price of its product is based on the discount given by $ 216 - 0.2x dollars per unit. Give the functions for Revenue, Cost, and Profit: R(x) = C(x) = P(x) =