Macroeconomic help. please show work so i can see how to do it.

QUESTION 34 Assume that the reserve ratio in the economy is 10%. If the Federal reserve buys bonds worth $20 million from a commercial bank, then all else equal, the corresponding change in deposits (following economy-wide bank-by-bank deposit expansion) equals O $2 million $20 million O $100 million O $200 million QUESTION 35 In a commercial bank's balance sheet, reserves at the Central Bank are: Assets O Liabilities Neither assets nor liabilities QUESTION 36 If the money supply growth is 5 percent per year, velocity growth is 2 percent per year, and real GDP growth is 3 percent per year, then the quantity equation of money says that inflation is 4 percent per year 6 percent per year O 7 percent per year 10 percent per year QUESTION 37 The quantity equation of money tells us that, all else equal, if the growth rate of real GDP increases, O inflation stays the same. O inflation increases O inflation decreases