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Answers for Chapter 21<br />

Fill-in-the-blanks: 1. Market power 5. Marginal revenue<br />

2. Perfect competition 6. average variable<br />

3. Perfect competition 7. economic efficiency<br />

4. horizontal<br />

Multiple Choice: 1. d 9. b. 17. b.<br />

2. c. 10. b. 18. d.<br />

3. c. 11. a. 19. c.<br />

4. b. 12. c. 20. b.<br />

5.b. 13.a. 21. a.<br />

6. c. 14. c. 22. b.<br />

7. d. 15. d.<br />

8. c. 16. c.<br />

Problems:<br />

1.<br />

Price<br />

$7 -<br />

Quantity<br />

MC<br />

D = P = MR<br />

2. The shutdown point occurs if price falls below AVC. By shutting down, a firm limits its loss to<br />

its fixed costs. If the firm continued producing, it would incur a loss greater than its fixed costs.<br />

3. If economic losses are occurring in a perfectly competitive market:<br />

(1) the number of firms will decrease as existing firms leave the market<br />

(2) the market price will increase as the market supply decreases<br />

(3) the economic loss will be eliminated<br />

FOR REVIEW ONLY - NOT FOR DISTRIBUTION<br />

21 - 15 Perfect Competition

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