If a firm has a cost of debt of 7.2% (with a market value of debt outstanding equal to $3,000,000) and a cost of equity of 12.2% (with a current stock price of $13.6 and 1,000,000 shares outstanding), what is the firm's wacc, given a 29% tax rate? (answer in PERCENT, but without the percent sign, e.g. "10.2" is 10.2%)