Problem 2 Suppose that a refrigerator manufacturer determines that its cost, in dollars, of producing x refrigerators each week is given by C (x) = 23!:2 + 15x + 1500. In the market, the demand function for that brand of refrigerator is found to be x = 00:!) = 420 0.539, where p is in dollars. a) Rewrite the demand function to express 3) as a function of x. b) Find the revenue function R(x). c) Find the marginal revenue function. d) Find. the profit function. e) Find the marginal profit function