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Duffy Enterprises has issued common stock, preferred stock, and debt to finance its operation. The table below shows financial information on the firm. 2018 Balance Sheet: Interest bearing debt $606,207.00 Preferred stock $54,830.00 Shareholder equity $750,000.00 Duffy has publicly traded common stock that has a capitalization currently of $1,815,851.00. An analyst has estimated that the cost of debt for Duffy is 6.00%, the cost of the preferred stock is 10.00%, and the cost of the common equity is 15.00%. Duffy has a marginal tax rate of 35.00%. What is the cost of capital for Duffy? Submit Answer format: Percentage Round to: 2 decimal places (Example: 9.24%, % sign required. Will accept decimal format rounded to 4 decimal places (ex: 0.0924))