When firms use multiple sources of capital they need to calculate the appropriate discount rate for valuing their firm's cash flows as?

When firms use multiple sources of capital, they typically calculate the appropriate discount rate using the Weighted Average Cost of Capital (WACC). WACC accounts for the cost of equity and the cost of debt, weighted by their respective proportions in the firm's capital structure. This rate reflects the average return expected by all capital providers, enabling firms to accurately value their cash flows and make informed investment decisions. Using WACC ensures that the risk associated with different funding sources is appropriately considered in financial analysis.