Over the past 50 years, the U.S. money supply has
a. increased every year, despite federal efforts to hold it in check.
b. increased in some years but has tended to shrink overall.
c. generally increased, although not at a constant rate.
d. not changed; although the amount of money in circulation has varied, the actual
money supply has not grown or shrunk.
e. fallen.
Both aggregate demand and aggregate supply curves are relationships between
a. income and employment.
b. output and income.
c. the price level and real output.
d. interest rates and the prices of financial assets.
e. inflation and unemployment.
The need for barter is eliminated when money is used as a
a. medium of exchange.