Which of the following is true for a firm operating under perfect competition, monopolistic competition, and monopoly?
a. Firms earn positive economic profits in the long run.
b. Firms earn zero economic profits in the long run.
c. Profits are maximized when marginal cost equals marginal revenue.
d. Price equals marginal cost.
c
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Consider a small open economy in equilibrium. What happens to the real interest rate, national saving, investment, and the current account balance in equilibrium in each of the following situations (each taken separately)
Explain which curve shifts and why, and show a diagram explaining your results. (You may assume that none of the shocks is large enough to significantly affect labor supply or labor demand significantly.) (a) wealth declines (b) business taxes decline (c) income rises temporarily
When a Country A's overall balance is positive:
a. The Overall balance cannot be positive. It must be zero. b. Country A's central bank is buying the domestic currency in the foreign exchange market. c. Country A's central bank is buying foreign currencies in the foreign exchange market. d. Country A is losing reserve assets.