Currently in the United States, money is backed by

Suppose that you find out from an L.L. Bean catalogue that a sweater costs $30.00. In this case, money is serving as a

A) medium of exchange. B) unit of account. C) store of value. D) double coincidence of want.

The efficient markets hypothesis suggests that investors

A) should purchase no-load mutual funds which have low management fees. B) can use the advice of technical analysts to outperform the market. C) let too many unexploited profit opportunities go by if they adopt a "buy and hold" strategy. D) act on all "hot tips" they hear.