Find the interest earned on $20,000 invested for 3 years at 5% interest compounded as follows a. Annually b. Semiannually (twice a year) c. Quarterly d. Monthly e. Continuously nt A =P 1+ n A = Pert a. Compounding annually, the interest earned is $ (Round to the nearest cent as needed.) b. Compounding semiannually, the interest earned is $ (Round to the nearest cent as needed.) c. Compounding quarterly, the interest earned is $ (Round to the nearest cent as needed.) d. Compounding monthly, the interest earned is $ (Round to the nearest cent as needed. ) e. Compounded continuously, the interest earned is $ (Round to the nearest cent as needed.)