One of your friends needs your help in computing the cost of capital for a company. She has the following information about the company. What is the company's weighted average cost of capital (WACC)? Long-term debt outstanding (trading at par) $500,000 Current yield to maturity 7.5% Number of shares of common stock outstanding 20,000 Book value per share $10 Market value per share $50 Expected rate of return on the stock 10% Tax rate 35% 8.29% 9.25% 8.75% 6.34%