When the U.S. dollar rises in value relative to the Mexican peso, the dollar has ________, and when the dollar falls in value, it has ________

Under a system of flexible exchange rates, a decrease in the demand for a country's currency on the foreign exchange market will: a. cause the country's currency to depreciate in value

b. cause the country's currency to appreciate in value. c. make the country's goods more expensive to foreigners. d. make foreign goods less expensive to the country's citizens.

If taxes are $2,000 when income is $15,000 and they are $3,000 when income is $19,000, then the marginal tax rate is:

A. 20 percent B. 25 percent C. 30 percent D. 40 percent