[Select all relevant.] The firm's marginal cost of capital is the: none of these. weighted average of the cost of the debt and equity provided to the company by all investors and creditors. discount rate used to evaluate the cash flows of capital budgeting projects with the same risk as the firm's existing assets. rate of return the firm must earn on its investments, in order to maintain its stock price. minimum rate of return that investors require for providing capital to the company. Previous Page Next Page ( r