An increase in demand and a decrease in supply cause which of the following?
A. Equilibrium price change is indeterminate.
B. Equilibrium quantity decreases.
C. Equilibrium price falls.
D. Equilibrium price rises.
Answer: D
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When a market is efficient, the
A) sum of consumer surplus and producer surplus is maximized. B) deadweight gain is maximized. C) quantity produced is maximized. D) marginal benefit of the last unit produced exceeds the marginal cost by as much as possible. E) total benefit equals the total cost.
Why can a monopoly make an economic profit in the long run?
A) because there are close substitutes for the firm's product B) because the firm is protected by barriers to entry C) because the firm produces where MR=MC D) because P > MR E) ALL of the above are reasons why a monopoly can make an economic profit in the long run.
Most movie theatres charge different prices to different groups of customers for movie admission but not on movie popcorn. Which of the following is a reason for this?
A) because the markup on movie popcorn is very high and movie theatres do not want to forgo this source of revenue B) because it is easier to limit resale in movie admissions but not in popcorn C) because the cost of operating a concession stand in a movie theatre is very high compared to the cost of showing a movie D) because the demand for popcorn is very high relative to the demand for movie admissions
A central bank like the Federal Reserve in the United States can help banks survive a bank run by
A) raising the discount rate. B) acting as a lender of last resort. C) printing money. D) increasing the required reserve ratio.