QUESTION 6 In a competitive industry, each firm has a cost function C(x) = x² + 4 (for a given set of input prices). Demand for the industry's output is x = 120 - p. The (long run) equilibrium number of firms is O a. 120 O b.58 O . 46 O d.34 O e. 29 O f. 12 O g. 2 O h. None of the above

✓ Question Completion Status: A non- competitive firm's demand curve is P = 10-4Q. So its MR is O 5-2Q O 10-40 10-8Q 05-Q QUESTION 3 For a non-competitive firm with a demand curve P = 1800-2Q and marginal costs of MC = $200, how much is the equilibrium quantity (Q)? 360 400 560 620 QUESTION 4 For a non-competitive firm with a demand curve P = 1800-2Q and marginal costs of MC = $200, how much is the equilibrium price (P*)? O $500 (4750 Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Ar

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Suppose that in a competitive market the equilibrium price is $2.50. What is marginal revenue for the last unit sold by the typical firm in this market? Select one: O a. less than $2.50 O b. more than $2.50 Oc. exactly $2.50 Od. The marginal revenue cannot be determined without knowing the actual quantity sold by the typical firm.