Here is some information about Stokenchurch Inc.: Beta of common stock = 1.4 Treasury bill rate = 4% Market risk premium = 7.7% Yield to maturity on long-term debt = 6% Book value of equity = $460 million Market value of equity = $920 million Long-term debt outstanding = $920 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 places.) WACC %