After the increase in the price level, the quantity of money demanded at the initial interest rate of 9% will be (greater, less) than the quantity of money supplied by the Fed at this interest rate. People will try to (increase, decrease) their money holdings. In order to do so, people will (buy, sell) bonds and other interest-bearing assets, and bond issuers will find that they (have to offer higher, can offer lower) interest rates until the money market reaches its new equilibrium at an interest rate of BLANK.
The change in the interest rate that you found previously will cause residential and business investment spending to (fall, rise), leading to (an increase, a decrease) in the quantity of output demanded in the economy.