Watta company has only common equity and bonds. You are asked to estimate Watta company's WACC and you have the following information: Watta's next stock dividend is expected to be 1$ per share. This dividend will grow at 6% indefinitely. The stock currently sells for $50 per share. Watta has a target debt-equity ratio of 2/3 and it can sell 10-year coupon bonds with a coupon rate of 9% at the par value. IF the tax rate is 21% what is the company's estimated WACC? (The company does not have any preferred stocks)