future profitability

Briefly explain whether each of the following shifts the aggregate demand curve to the right or to the left.
a. The Federal Reserve sells $10 billion of U.S.
Treasury securities.
b. The federal government launches a massive program to rebuild the nation’s highways.
c. The federal government cuts the corporate profits tax.
d. The foreign exchange value of the dollar rises.
e. Firms become pessimistic about the future profitability of spending on factories and machinery.