When he invented the cotton gin in 1793, Eli Whitney exhibited

Which of the following would cause an increase in aggregate demand in the short run?

A) an increase in taxes B) an increase in the supply of money C) a decrease in the price level D) a crop failure

Based on Table 3.1, the opportunity cost of a pair of shoes in the United States is

A) three computers. B) two computers. C) one computer. D) one-half computer. E) None of the above.