a. Use the appropriate formula to find the value of the annuity b. Find the interest Periodic Deposit $120 at the end of every six months Rate 3.5% compounded semiannually ime 15 years Click the icon to view some finance formulas. a. The value of the annuity is SI (Do not round until the final answer. Then found to the nearest dollar as needed.) OS M b . The interest is (Use the answer from part (a) to find this answer. Round to the nearest dollar as needed) Enter your answer in each of the answer boxe