Answer:
Increasing government spending and decreasing taxes.
Explanation:
Given that,
consumption = $400 billion
Investment = $40 billion
Government purchases = $90 billion
Net export = $25 billion
Full employment level of GDP = $600 billion
Actual GDP:
= consumption + Investment + Government purchases + Net export
= $400 billion + $40 billion + $90 billion + $25 billion
= $555 billion
The actual GDP is lower than the full employment level of GDP, therefore, there is a recessionary gap in the economy.
In this situation, the government uses the expansionary fiscal policy by increasing government spending and decreasing taxes.