Time Rate 3% compounded monthly 30 years b. Find the interest. Periodic Deposit $80 at the end of each month 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.) Formulas In the provided formulas, P is the deposit made at the end of each compoundi period, r is the annual interest rate of the annuity in decimal form, n is the num of compounding periods per year, and A is the value of the annuity after t years P[(1+r)-1] A = A = r P[(1+1) - A 1 A P= nt