1.A firm is considering an investment in a new machine with a price of $15.6 million to replace its existing machine. The current machine has a book value of $5.4 million and a market value of $4.1 million. The new machine is expected to have a four-year life, and the old machine has four years left in which it can be used. If the firm replaces the old machine with the new machine, it expects to save $6.3 million in operating costs each year over the next four years. Both machines will have no salvage value in four years. If the firm purchases the new machine, it will also need an investment of $250,000 in net working capital. The required return on the investment is 10 percent, and the tax rate is 39 percent. What are the NPV and IRR of the decision to replace the old machine?

2.If Wild Widgets, Inc., were an all-equity company, it would have a beta of .95. The company has a target debt-equity ratio of .40. The expected return on the market portfolio is 11 percent, and Treasury bills currently yield 4 percent. The company has one bond issue outstanding that matures in 20 years and has a coupon rate of 6.5 percent. The bond currently sells for $1,080. The corporate tax rate is 34 percent.

1. What is the company's cost of debt?
2. What is the company's cost of equity?
3. What is the company's weighted average cost of capital?