A firm has 4,000,000 shares of common stock outstanding, each with a market price of $12.00 per share. It has 25,000 bonds outstanding, each selling for $980. The bonds mature in 20 years, have a coupon rate of 9 percent, and pay coupons semiannually. The firm's equity has a beta of 1.5, and the expected market return is 15 percent. The tax rate is 30 percent and the WACC is 15 percent. What is the risk-free rate