A single-price monopoly can sell 10 units of its product at a price of $45 each but to sell 11 units, the monopoly must cut the price to $44. What is the marginal revenue of the extra unit sold?

Which of the following is one component of the "trilemma" that is faced by policy makers in choosing monetary arrangements?

A) exchange rate stability B) restrictions on international capital movements C) tariffs and subsidies D) restrictions on the migration of labor E) global inflation

The aggregate supply of labor is the

A) total amount of time a person works over his or her lifetime. B) total amount of time a person spends in the labor force over his or her lifetime. C) unemployment rate. D) sum of the labor supplied by everyone in the economy.