A firm has the following costs of raising capital: Ke = 15% Kp = 9% Ka = 7% What is the firm's weighted cost of capital? Why would the firm choose a mix of financing options instead of just going for the cheapest one? A firm has the following costs of raising capital: Ke = 15% Kp = 9% Ka = 7% What is the firm's weighted cost of capital? Why would the firm choose a mix of financing options instead of just going for the cheapest one