In the liquidity-preference framework, suppose that the Fed changes the money supply to keep the nominal interest rate unchanged whenever the demand for money shifts. Show what happens to the quantity of money and the nominal interest rate if the money-demand curve shifts to the right.

Suppose that the liquidity effect is small, people monitor changes in the money supply carefully, and prices and inflation expectations adjust rapidly. In this situation, describe the movement of the nominal interest rate when there is a permanent decline in the growth rate of the money supply.