probability

A. A woman deposits $8000 at the end of each year for 13 years in an account paying 4% interest compounded annually. (a) Find the final amount she will have on deposit. (b) Her brother-in-law works in a bank that pays 3% compounded annually. If she deposits money in this bank instead of the other one, how much will she have in her account? (c) How much would she lose over 13 years by using her brother-in-law's bank? B. In order to accumulate enough money for a down payment on a house, a couple deposits $694 per month into an account paying 3% compounded monthly. If payments are made at the end of each period, how much money will be in the account in 7 years? C. Starting at age 50, a woman puts $1700 at the end of each quarter into a retirement account that pays 7% interest compounded quarterly. When she reaches age 60, she withdraws the entire amount and places it in a mutual fund account that pays 9% compounded monthly. From then on she deposits $ 200 in the same mutual fund at the end of each month. How much is in the account when she reaches age 65