Discuss in detail how each of the following actions will affect the level of planned investment spending and unplanned inventory investment. Assume the economy is initially in income-expenditure equilibrium. Organize your responses in paragraphs. You must also respond to at least two other students' postings. This means that each student posting must be a minimum of three. a. The Federal Reserve raises the interest rate. b. There is a rise in the expected growth rate of real GDP. c. A sizable inflow of foreign funds into the country lowers the interest rate.