Answer the following questions about marginal propensity to consume and the multiplier. First provide the correct equation and then show your work to arrive at the answer:

1. What is the marginal propensity to consume when consumption changes from 7 to 6 and disposable income changes from 5 to 3?
2. If disposable personal income is 10 and consumptionis12, what is personal savings? What does this mean?
3. What is the multiplier when the change inequilibriumlevel of real GDP in the aggregate expenditures model is 9, and change in autonomous aggregate expenditures is 3?
4. What is the multiplier when the marginal propensity to save is 1/3?
5. What would happen to the marginal propensity to save when a tax cut was enacted causing the multiplier to change to 5?