WACC. A firm's target capital structure is 40 percent debt and 60 percent common equity. Its bonds have a 12 percent coupon, paid semiannually, a current maturity of 20 years, and sell for $1,000. The firm's marginal tax rate is 20 percent. The firm's policy is to use a risk premium of 4 percentage points when using the bond-yield-plus-risk-premium approach to find the cost of retained earnings (note that retained earnings is internally generated equity). The firm uses no preferred stock. Calculate the firm's weighted average cost of capital (WACC).