Help me answer the following question I am having a hard time understanding

Interest Rate% Money Demand (billions of dollars) 12 140 11 160 10 180 9 200 240 300 360 440 540 Assume that the money supply is equal to 200 (do not use % signs in your answers) Part 1: What is the equilibrium rate of interest? |Number Part 2: Assume that the Bank of Canada buys bonds and increases the money supply to 360 What is the equilibrium rate of interest? |Number Part 3: A fall in income causes the demand for money to Click for List by 60 billion. If the money supply is 120, what is the equilibrium rate of interest? |Number Part 4: Assuming the change in part 3, if money supply is 380, what is the equilibrium rate of interest? |Number