Calculate the required rate of return for Mercury Inc. to the nearest $\mathrm{.}1$ Assume that investors expect a $4\mathrm{.}0$ percent rate of inflation in the future. The real risk$-$free rate is equal to $5\mathrm{.}0$ percent and the market risk premium is $9\mathrm{.}2$ percent. Mercury has a beta of $1\mathrm{.}6,$ and its realized rate of return has averaged $16\mathrm{.}2$ percent over the last $5$ years.