I need help with question 18 please.

The T-bill rate is 4 percent, and the expected return on the market is 11 percent. a. Which projects have a higher expected return than the firm's 11 percent cost of capital? b. Which projects should be accepted? c. Which projects will be incorrectly accepted or rejected if the firm's overall cost of capital were used as a hurdle rate? You are given the following information concerning Parrothead Enterprises: Calculate the WACC for Parrothead Enterprises. Liu industrial Machines issued 175,000 zero coupon bonds four years ago. The bonds originally had 30 years to maturity with a yield to maturity of 6.1 percent. Interest rates have recently decreased, and the bonds now have a yield to maturity of 5.9 percent. If the company has a $68 million market value of equity, what weight should it use for debt when calculating the cost of capital