Assume that you want to have $ 3100 saved in a sinking fund in 1 year. The account pays 4.5% compounded monthly. What should be your monthly payments

To get the best loan rates available, the Riches want to save enough money to place 20% down on a $160,000 home. They plan to make monthly deposits of $125 in an investment account that offers 8.5% annual interest compounded semiannually. Will the Riches have enough for a 20% down payment after five years of saving? How much money will they have saved?

New grandparents decide to invest 3200 per month in an annuity for their grandson, The account will pay interest per year which is compounded monthly. How much will be in the child's account at his twenty-first birthday?