Marriott Corporation is one of the leading lodging and food service companies that began as a root beer stand. It calculates the weighted average cost of capital (WACC) for each of its divisions to evaluate investment opportunities. The WACC is calculated using the cost of equity, cost of debt, and capital structure of each division. The analysis found that the WACC for Marriott's lodging division is the highest at 9.33%, indicating more careful investment is needed there compared to other divisions like restaurants and contract services with lower WACCs. Overall, the proper calculation of WACC for each division helps Marriott evaluate projects and make optimal capital budgeting decisions.