If a firm is a price taker, then the demand curve it faces is perfectly
Relative to GDP, interest on the national debt
a. has grown at a steady rate during the last 40 years
b. has remained constant in recent decades
c. grew especially rapidly during the 1980s
d. declined slightly during the 1980s
e. fluctuates as retirement portfolios change their allocation of government securities
Which of the following will cause a movement along the aggregate demand curve?
a. A decrease in the price level
b. An increase in government purchases
c. A decrease in taxes
d. An increase in investment spending
e. An increase in the interest rate