A firm has an equity cost of capital of 10%, market capitalization of $10.8 billion, and an enterprise value of $14.4 billion. Suppose the firm's cost of debt capital is 6.1% and its marginal tax rate is 35%. The firm follows a policy of maintaining a constant debt-equity ratio. (a) What is the firm's WACC? (b) Using the WACC valuation method calculate the value of a project with average risk and the following expected unlevered cash flows? Year UCF 100 50 100 70