Congratulations! You've just been appointed chairman of the Council of Economic Advisers in Textland. The mpe is .8. There is a recessionary gap of $400.

a. The government wants to eliminate the gap by changing expenditures. What policy would you suggest?

b. Your research assistant comes running in and tells you that instead of changing expenditures, the government wants to achieve the same result by decreasing taxes. What policy would you recommend now? (Requires reading and using the math in Appendix A of the chapter "The Multiplier Model.")

c. Your research assistant has a worried look on her face. "What's the problem?" you ask. "I goofed," she confesses. "I thought taxes were exogenous when actually there's a marginal tax rate of 2." Before she can utter another word, you say, "No problem, I'll simply recalculate my answers to parts a and b and change them before I send them in." What are your corrected answers? (Requires reading Appendix A of the chapter "The Multiplier Model.")