Suppose you are the economist of Didier Enterprises - a firm that manufactures ballistic missiles. Based on the estimates provided by a consultant, you know that the relevant demand and cost functions for the missiles are Q= 25 -.5P and MC = 2. Assume that MC is equal to average costs. a. What is the firm's inverse demand function? b. What is the firm's marginal revenue when producing 4 units of output? c. What are the levels of output and price when you are maximizing profits? d. What will be the level of your profits?