4. (20 points) Consider a game ticket market for Phoenix Suns. The demand curve is P(Q) = 20,000 - 2Q. The Stadium capacity of the Talking Stick Resort Arena is 18,000. Suppose Phoenix Suns is maximizing profit. 4.1 (5 points) Draw the demand curve, marginal revenue curve, and the marginal cost curve all together in a graph. (Indicate the axes, curves, and intercepts) 4.2 (5 points) How much is the dead weight loss in the ticket market