Based on the table, what is Barry's marginal benefit from the 40th slice of pizza?

If the bank returns $1,060 on the $1,000 deposited for a year during which inflation was 4 percent, the real interest rate is

A) 2 percent. B) 6 percent. C) -2 percent. D) 16 percent. E) 10 percent.

Because Federal Reserve Notes (paper currency) are legal tender,

A) U.S. creditors must accept them in payment of debts. B) U.S. workers must accept them as payment for labor services. C) U.S. firms must accept them as payment for goods and services. D) All of he above are correct.