The Riddler's Lair has a cost of equity of 13.8 percent a pre-tex cost of debt of 6.7 percent and a tax rate of 34 percent.what is the firm's WACC if the debt-equity ratio is 0.40? (REMINDER- Debt-equity ratio of 0.3 means that for there is $0.30 debt for every $1 of equity in the capital structure)