Explain whether each of the following shifts the aggregate demand curve to the right or to the left. The Federal Reserve sells $1313 billion of U.S. Treasury securities. It would ▼ the interest rate, causing the AD curve to shift to the ▼ left right . Part 2 The federal government launches a massive program to rebuild the nation's highways. It would directly ▼ decrease increase aggregate expenditure, causing the AD curve to shift to the ▼ left right . Part 3 The federal government raisesraises the corporate profits tax. It would ▼ decrease increase the after-tax rate of return on investment projects, ▼ increasing decreasing investment spending and causing the AD curve to shift to the ▼ left right . Part 4 The foreign exchange value of the dollar risesrises. It would ▼ increase decrease the cost of U.S. exports and ▼ decrease increase the cost of foreign imports, causing the AD curve to shift to the ▼ left right . Part 5 Firms become pessimisticpessimistic about the future profitability of spending on factories and machinery. It would ▼ decrease increase current investment spending, causing the AD curve to shift to the ▼ right left .