Bolster Foods' (BF) balance sheet shows a total of $25 million long-term debt with a coupon rate of 8.50%. The yield to maturity on this debt is 8.00. The balance sheet also shows that the company has 10 million shares of stock, and the stock has a book value per share of $5.00. The stockholders' required rate of return, rs, is 12.00%. The tax rate is 40%. Calculate WACC based on book values.