Firm Why has a capital structure based on market values of 34 percent debt and the rest common equity. You know that the coupon rate on the debt is 8 percent and the yield to maturity on the debt is 9.4 percent. You also know that the common equity beta is 1.66, the market risk premium is 5.5 percent and the risk-free rate is 2 percent, and the tax rate is 40 percent. Find Firm Why's WACC. Input your answer as a decimal rounded to four places.