Doing a financial project on Zoom Video Communications Inc (ZM). I have access to yahoo financial 

- Estimate the firms before-tax and after-tax component cost of debt; (Note: If the information about the current corporate tax rate is not available, you need to estimate the tax rate based on the historical tax payments).

- Estimate the firms component cost of preferred stock if the firm has issued preferred stocks. (I found that they did not have any preferred stock)

- Use three approaches (CAPM, DCF, bond-yield-plus-risk-premium) to estimate the component cost of common equity for the firm. 

- Calculate the firms weighted average cost of capital (WACC) using the market-based capital structure weights.