Suppose you just bought a 20-year annuity of $7,500 per year at the current interest rate of 10% per year (Do not round intermediate calculations. Round the final answers to 2 decimal places. Omit $ sign in your response.) What is the value of your annuity today? Present value $ What happens to the value of your investment if interest rates suddenly drop to 5%? Present value What happens to the value of your investment if interest rates suddenly rise to 15%? Present value $