Which of the following is not necessarily true in the long for a competitive industry?

a. Firms earn zero profits.
b. Firms set MC = MR.
c. A firm will not produce if the market price is less than their break-even price.
d. The long-run supply curve is more elastic than the short-run supply curve.

a. Firms earn zero profits.

Economics

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Everything else held constant, when the current value of the domestic currency increases, the ________ domestic assets ________

A) demand for; increases B) quantity demanded of; increases C) demand for; decreases D) quantity demanded of; decreases

Economics

An apple orchard currently hires 10 workers. The owner estimates that hiring an additional worker would increase apple yields by 20 bushels per day. The price of apples is $15 per bushel. The owner should hire the extra worker if the wage rate is no greater than

a. $50 per day. b. $150 per day. c. $200 per day. d. $300 per day.

Economics