Hi can you please help in these 4 questions. In simple and brief manner. Thank you

1. What is the target for the overnight rate? How does it influence other interest rates? 2. What effect do changes in the Bank of Canada interest rate have on the Gross Domestic Product? Explain the process. 3. Estimate the potential impact on the money supply if a chartered bank received a deposit of $1,000 and kept only 20% in reserve? 4. What type of money makes up the majority of the money supply