Each symmetric rm of a monopolistically competitive industry faces the following demand and cost functions as below: 1 1 _ = S P P Q [n 15 ( )1 C = 31,999 + 11Q Where, Q = quantity demanded, S = total sales of the industry (currently 75,000 units), n = number of firms in the industry, P = price charged by the firm, P = average price charged by other firms, C = total cost a) Find the Marginal Revenue (MR) function. Show work. b) Solve for the short-run prot maximizing price as a function of n. Show work. C) Show the CC and PP curve on a diagram. Show the long-run equilibrium on that diagram. Label it properly. d) Solve for long-run profit maximizing price, average cost, number of rms, and sales per rm. Show work