How much more would you need to deposit at the end of every month to accumulate $295,500 over 24 years if the interest rate earned is 5.5% compounded annually instead of 5.5% compounded monthly?

a. Calculate the accumulated value of her investment after the first 4 years.

b. Calculate the accumulated value of her investment at the end of 8 years, and how much interest did she earn in her investment over the 8 years?