1.- Luis has deposited $ 1,500 at the end of each year for the past 15 years into a retirement savings plan. Your deposits earned interest at 6.5% compounded quarterly for the first 4 years; at 3% semiannually compounded during the following 7 years and 9.5% compounded bi-monthly during the last 4 years. And a payment of $ 4,500 in period 6 What is the accumulated value of your retirement plan? and What is the interest earned in the 15 years?