1. We know the firm is a price taker because:   a. its MC curve slopes upward. b. its ATC curve is U-shaped. c. its MR curve is horizontal. d. MC and ATC are equal at the profit-maximizing output.                                          2. At this firm’s profit-maximizing output:   a. total revenue equals total cost. b. it is earning an economic profit. c. allocative, but not necessarily productive, efficiency is achieved. d. productive, but not necessarily allocative, efficiency is achieved. 3. The equality of P, MC, and minimum ATC:   a. occurs only in constant-cost industries. b. encourages entry of new firms. c. means that the “right goods” are being produced in the “right ways.” d. results in a zero accounting profit.                                                                                              4. When P = MC = lowest ATC for individual firms, in the market:   a. consumer surplus necessarily exceeds producer surplus. b. consumer surplus plus producer surplus is at a maximum. c. producer surplus necessarily exceeds consumer surplus. d. supply and demand are identical.

Principles of Economics 2e
2nd Edition
ISBN:9781947172364
Author:Steven A. Greenlaw; David Shapiro
Publisher:Steven A. Greenlaw; David Shapiro
Chapter8: Perfect Competition
Section: Chapter Questions
Problem 39P: The AAA Aquarium Co. sells aquariums for 20 each. Fixed costs of production are 20. The total...
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1. We know the firm is a price taker because:   a. its MC curve slopes upward. b. its ATC curve is U-shaped. c. its MR curve is horizontal. d. MC and ATC are equal at the profit-maximizing output.                                          2. At this firm’s profit-maximizing output:   a. total revenue equals total cost. b. it is earning an economic profit. c. allocative, but not necessarily productive, efficiency is achieved. d. productive, but not necessarily allocative, efficiency is achieved.
3. The equality of P, MC, and minimum ATC:   a. occurs only in constant-cost industries. b. encourages entry of new firms. c. means that the “right goods” are being produced in the “right ways.” d. results in a zero accounting profit.                                                                                              4. When P = MC = lowest ATC for individual firms, in the market:   a. consumer surplus necessarily exceeds producer surplus. b. consumer surplus plus producer surplus is at a maximum. c. producer surplus necessarily exceeds consumer surplus. d. supply and demand are identical.

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