(Use a comma to separate answers as 3. Find the interest rate required for an investment of $5000 to grow to $6500 in 8 years if interest is compounded as follows. a. Annually b. Quarterly a. Write an equation which relates the investment of $5000, the desired value of $6500, and the time period of 8 years in terms of r, the yearly interest rate (written as a decimal), and m, the number of compounding periods per year. The required annual interest rate if interest is compounded annually is %. (Round to two decimal places as needed.) b. The required annual interest rate if interest is compounded quarterly is % . (Round to two decimal places as needed.)