Here is some information about Stokenchurch Inc.: = = Beta of common stock = 1.6 Treasury bill rate = 4% Market risk premium = 7.9% Yield to maturity on long-term debt = 8% Book value of equity = $480 million Market value of equity = $960 million Long-term debt outstanding = $960 million Corporate tax rate = 21% - What is the company's WACC? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal ces.) WACC %