A company with a target debt-equity ratio of 0.5 has a beta of 1.15. The expected return on the market portfolio is 13.5% and Treasury bill yields 4.4%. The companys bonds mature in 23 years, have a coupon rate of 7.4% semi-annual, and sell for $970. The corporate tax rate is 28%. What is the companys WACC? (Hint: Remember that the cost of debt (rd) is the bonds YTM indicated as an APR quotation)