a. Use the appropriate formula to find the value of the annuity. b. Find the interest. Click the icon to view some finance formulas. a. The value of the annuity is $ (Do not round until the final answer. Then round to the nearest dollar as needed.) b. The interest is $ (Use the answer from part (a) to find this answer. Round to the nearest dollar as needed.) In the provided formulas, P is the deposit made at the end of each compounding period, r is the annual interest rate of the annuity in decimal form, n is the number of compounding periods per year, and A is the value of the annuity after t years. A=rP[(1+r)t1]A=(nr)P[(1+nr)nt1]P=[(1+nr)nt1]A(nr)