1. What does equilibrium mean in macroeconomics?

2. How do aggregate expenditures affect income, or real GDP?

3. What are the leakages from and injections to spending?

4. Why does equilibrium real GDP change by a multiple of a change in autonomous expenditures?

5. What is the spending multiplier?

6. What is the relationship between the GDP gap and the recessionary gap?

7. How does international trade affect the size of the multiplier?

8. Why does the aggregate expenditures curve shift with changes in the price level?