The 20 percent of families with the lowest income in the United States receive approximately ________ percent of total income.

In the money market, in the short run if the quantity of money exceeds the quantity of money demanded, then to achieve equilibrium the

A) inflation rate increases. B) supply of money increases. C) demand for money increases. D) nominal interest rate falls. E) price level rises.

When a firm is able to engage in perfect price discrimination, its marginal revenue curve

A) lies below its demand curve. B) is the same as its demand curve. C) lies above its demand curve. D) is the same as its supply curve. E) is undefined because it does not exist.