Principal of exist150 is invested at 4% simple interest, paid annually, for 10 years. What is the rate of return? Show your work. b) Which option below would yield the greatest future value? A. paying interest every 3 months B. increasing the interest rate to 5% Otis bought a exist7500 corporate bond. The bond earns 3%, compounded monthly. After 2 years, the interest rate changed to 4.5%, compounded annually. Determine the value of Otis' investment after 8 years. Show your work