Attempts Keep the Highest / 2 6. 6: The Cost of Capital: Weighted Average Cost of Capital common stock should be used in the firm's WACC calculation. common equity? Do not round intermediate calculations. Round your answer to two decimal places. % What is the firm's weighted average cost of capital (WACC 2 ) if it has to issue new common stock? Do not round intermediate calculations. Round your answer to two decimal places. %