Investing Peter Healy deposits $800 at the end of each month for 5 years in an investment account with a guaranteed interest rate of 4.12% compounded monthly. (a) Find the value of the account at the end of 5 years. (b) A rival financial planner offers Peter an investment strategy of depositing $700 a month for 5 years with a guaranteed interest rate of 6.15% compounded monthly. What is the value of this investment strategy at the end of 5 years? (c) How much more money is gained by investing in the better strategy described in part (a) or in part (b)?