Severai years ago, Rolen Riders issued preferred stock with a stated annual dividend of 11% of its $100 par value, Preferred stock of this type currently yields 9 is. Assume dividends are paid annually. a. What is the estimated value of Rolen's preferred stock? Round your answer to the nearest cont. b. Suppose interest rate levels have risen to the point where the prefarred stock now ylalds 15 W. What would be the new astimated value of Rolen's preferred stock? Hound your answer to the nearest cent