The U.S. population is over _________ million.

Which of the following is true? a. The nature of public goods is such that the government cannot accurately assess the benefits of those affected. b. National defense and flood control are illustrations of public goods

c. Just as in the case of external costs, public goods tend to be underprovided by the private sector. d. All of the above are true.

Which of the following would cause a decrease in the exchange value of the U.S. dollar?

a. A decrease in the amount of foreign debt purchased by U.S. citizens b. An increase in U.S. exports c. An increase in U.S. imports d. Increased demand by foreigners to buy U.S. government securities