Titan Mining Corporation has 8.6 million shares of common stock outstanding, 300,000 shares of 5 percent preferred stock outstanding and 160,000 7.4 percent semiannual bonds outstanding, par value $1,000 each. The common stock currently sells for $34 per share and has a beta of 1.30, the preferred stock currently sells for $84 per share, and the bonds have 15 years to maturity and sell for 115 percent of par. The market risk premium is 7.4 percent, T-bills are yielding 3 percent, and the company’s tax rate is 40 percent.

If the company is evaluating a new investment project that has the same risk as the firm’s typical project, what rate should the firm use to discount the project’s cash flows?