a. You will have approximately $ in the IRA when you retire. (Do not round until the final answer. Then round to the nearest dollar as needed.) At the age of 25, to save for retirement, you decide to deposit $40 at the end of each month in an IRA that pays 3.5% compounded monthly Use the following formula to determine how much you will have in the IRA when you retire at age 65. P[(1 + r) 1] a. b. The interest is approximately $ . (Use the answer from part a to find this answer. Round to the nearest dollar as needed.) A=- b. Find the interest