Exhibit 9-8 Keynesian aggregate-expenditures model
In Exhibit 9-8, an
increase in aggregate expenditures causes:
a. a movement down the aggregate demand curve from equilibrium real GDP $600 to
equilibrium real GDP $1,000.
b. a movement up the aggregate demand curve from equilibrium real GDP $1,200 to
equilibrium real GDP $1,000.
c. a shift of the aggregate demand curve to the right, causing equilibrium real GDP to
increase from $600 to $1,000.
d. a shift of the aggregate demand curve to the left, causing equilibrium real GDP to
decrease from $1,200 to $1,000.
e. no change in equilibrium real GDP.
Suppose that the consumer price index (CPI) was 160 in Year X and 166 in Year Y,
inflation during Year Y was approximately: