Calculate the required rate of return for Mercury Inc., assuming that investors expect a 1.5 percent rate of inflation in the future. The real risk-free rate is equal to 3.3 percent and the market risk premium is 1.6 percent. Mercury has a beta of 1.6, and its realized rate of return has averaged 11 percent over the last 5 years. 7.36% 7.86% 8.36% 8.86\% 9.36%