Use the information to answer the following a. If disposable income were $7400 , how much would be saved ? b. What is the "break -even " level of disposable income ? c. What is this economy's marginal propensity to consume ? d. What is the average propensity to consume when disposable income is $7000 ? When disposable income is $8000 ? 8. Multiplier effect .Show work to receive full credit . a. Suppose a $100 increase in desired investment spending ultimately results in a $300 increase in real GDP . What is the size of the multiplier ? b. If the MP5 is .4, what is the multiplier ? c. If the MPC is .75, what is the multiplier