please also show work so i can understand how to do it

Application: 18 1. Determine the present value of each annuity. Each payment is made at the end of the compounding period a) $1500 per year for 6 years at 5.6% compounded annually b) $7500 per quarter for 10 years at 7% compounded quarterly. 18 2. Determine the regular payment from each annuity. Each payment is made at the end of the compounding period. a) Present value of S6500 at 7% compounded semi-annually for 55 years. b) Present value of $9000 at 6.8% compounded monthly for 4.5 years. 16 3. Donna invests $5000 now in an annuity that pays 7.2% compounded monthly. She will make equal monthly withdrawals for the next 4 years, starting 1 month from now. a) Determine Donna's monthly withdrawal. b) Determine the interest earned over the term of the annuity Thinking 19 6. Suppose the rate on an $8000 annuity at 3.5% compounded annually for 6 years is doubled. Will the annual withdrawal double? Write a brief explanation of your answer and include calculations