An annuity pays $100 at the end of one month. It pays $110 at the end of the second month. It pays $120 at the end of the third month. The payments continue to increase by $10 each month until the last payment is made at the end of the 36th month. Find the present value of the annuity at 9% compounded monthly. Ans=$8394.60 but I cannot figure out the proper calculation