If all firms in a perfectly competitive industry are earning a normal profit, then:

A. existing firms will exit the industry.
B. new firms will enter the industry.
C. there is no incentive for firms to enter or exit the industry.
D. the market supply curve will shift to the left.


Answer: C

Economics

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Which of the following is TRUE about current cost method and market value method?

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In the long run in a monopolistically competitive market, a firm will, in theory,

A) earn economic profits. B) suffer losses. C) break even. D) earn zero accounting profits.

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Because people may change how they react when economic policies are changed, comparing macroeconomic models is

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Economics