Question 4 (10 points) If a firm (using a technology with increasing returns to scale) charges a price equal to ________ , then profit will be I: ::I marginal cost; maximized I: marginal cost; negative I: :l marginal revenue; maximized marginal cost; positive Question 5 (10 points) The linear demand curve for the monopolistic competition model implies that if a firm's price is the industry average, its quantity sold will be ________ the industry average. I: I above; below I: the same as; above I: :jI above; above below; below Question 6 (10 points) Under the model of monopolistic competition, a(n) __________ in the number of firms in the industry will cause __________ to I: '::I increase; markup; decrease I: :I increase; average cost; decrease I: increase; marginal cost; decrease I: I) decrease; markup; decrease