A monopolistic producer of two goods A and B has a joint total cost function C = 20q + 91 92 + 2092. where q, and q, denote the quantities of A and B respectively. The demand curves for the corresponding prices p, and p, are P1 = 50 - q + 92 P 2 = 30+ 29 -92' (a) Find the maximum profit if the firm produces a total of 15 goods. (b) Estimate the new optimal profit if the production quota increases by one unit. $