Acme Storage has a market capitalization of $139 million, and debt outstanding of $203 million. Acme plans to maintain this same debt-equity ratio in the future. The firm pays an interest of 7.3% on its debt and has a corporate tax rate of 38%. a. If Acme's free cash flow is expected to be $23.94 million next year and is expected to grow at a rate of 5% per year, what is Acme's WACC? b. What is the value of Acme's interest tax shield?