XYZ Corp. has bonds outstanding with a coupon rate of $2\%$ and a YTM of $5\mathrm{.}7\%.$ The risk$-$free rate of return is $2\mathrm{.}2\%$ and the market is returning $10\mathrm{.}0\%.$ The stock has a beta of $0\mathrm{.}9$ and the firm is financed with $45\%$ debt and $55\%$ equity. If the tax rate is $24\%,$ what is XYZ$$s WACC?