Deep Mines has 14 million shares of common stock outstanding with a beta df 1.15 and a market price of $42 a share. There are 900,000 shares of 9 percent preferred stock outstanding valued at $80 a share. The 10 percent semiannual bonds have a face value of $1,000 and are selling at 91 percent of par. There are 220.000 bonds outstanding that mature in 17 years. The market risk premium is 11.5 percen percent. What discount rate should the firm apply to a new project's cash flows if the project has the same risk as the firm's typical project? t, T-bills are yielding 7.5 percent, and the firm's tax rate is 32 14.59 percent 14.72 percent 15.17 percent 15.54 percent 13.15 percent