What is a firm's weighted-average cost of capital if the stock has a beta of 1.45, Treasury bills yield 5%, and the market portfolio offers an expected return of 14%? In addition to equity, the firm finances 30% of its assets with debt that has a yield to maturity of 9%. The firm is in the 35% marginal tax bracket.

I dont just want the answer, do a step by step of how you got to answer and include formulas and what they are.