SoFi's balance sheet shows $400 million in debt, $60 million in preferred stock, and $340 million in total common equity. SoFi's tax rate is 25%, rd = 6.4%, rps = 8.5%, and rs = 13.7%. If SoFi has a target capital structure of 50% debt, 5% preferred stock, and 45% common stock, what is its WACC? Answer as a percentage with 2 decimals (i.e. 7.99% as 7.99)