A firm maintains a debt-to-equity ratio of 0.55 and has a tax rate of 36%. The company does not issue preferred stock but has a pre-tax cost of debt of 8.75%. There are 20,000 shares of the company's stock outstanding with a beta of 0.9 and market price of $37.80. Yesterday, the company issued an annual dividend in the amount of $1.15 per share. Dividends are expected to grow at 4.74% indefinitely. What is the company's weighted average cost of capital?