Peter's Audio has 72,000 bonds outstanding that are selling at par value. The bonds have a yield to maturity of 6.95 percent. The company also has 5 million shares of common stock outstanding. The stock has a beta of 1.25 and sells for $28 a share. The U.S. Treasury bill is yielding 3 percent and the market risk premium is 7 percent. Peter's tax rate is 35 percent. What is Peter's weighted average cost of capital?