ARM Inc. which is a publicly traded company uses 60% equity and 40% debt for all of its financing needs. Shares of the common stock are currently selling at $75. The bonds of the firm are currently trading at $950 have an annual coupon rate of 7%, 30 years to maturity and a face value of $1000. The company has a beta of 1.20 and a 35% marginal tax rate. The market risk premium is 6% and the risk-free rate is 4%

What is the cost of equity? 

What is the after-tax cost of debt?

What is the WACC?