From the information in the above table, what is the marginal utility of the third quart of ice cream?

In the above figure, the aggregate demand curve is AD2, so the short-run equilibrium level of real GDP is

A) $16 trillion. B) $16.5 trillion. C) more than $16 and less than $16.5 trillion. D) None of the above answers is correct.

A tax is proportional if, as a person's income rises, the:

a. tax rate is constant. b. tax rate falls. c. tax rate rises. d. amount of the tax is constant. e. amount of the tax falls.