Answer:
1. a. The decrease in net exports will cause a decrease in aggregate demand. Â
b. This will lead to a decrease in the price level and a decrease in real GDP. Â
c. Expansionary fiscal policy will be used to reduce unemployment. Â
 d. The fiscal policy actions may include a decrease in taxes and/or an increase in government purchases. Â
 e. The goal of fiscal policy is to smooth out business cycles.
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2. a. The increase in gross investment will cause an increase in aggregate demand. Â
b. This will lead to an increase in the price level an increase in real GDP. Â
c. Contractionary fiscal policy will be used to reduce inflation.. Â
d. The fiscal policy actions may include an increase in taxes and/or a decrease in government purchases. Â
e. The goal of fiscal policy is to smooth out business cycles.
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3. C. In order to increase spending on infrastructure, the federal government decides to borrow funds.
Crowding out occurs when the government borrows a significant amount of loanable funds such that interest rates rise and private firms are unable to afford the new rates so borrow less.
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4. B. Making economic investments.
With private firms unable to borrow much in a crowding out scenario, they will be unable to use those funds to invest in the economy.