IRR, investment life, and cash inflows Oak Enterprises accepts projects earning more than the firm's 12% cost of capital. Oak is currently considering a 13 -year project that provides annual cash inflows of $15,000 and requires an initial investment of $117,500. (Note: All amounts are after taxes.) a. Determine the IRR of this project. Is it acceptable? b. Assuming that the cash inflows continue to be $15,000 per year, how many additional years would the flows have to continue to make the project acceptable (that is, to make it have an IRR of 12%) ? c. With the given life, an initial investment of $117,500, and cost of capital of 12%, what is the minimum annual cash inflow the investment would have to provide in order for this project to make sense for Oak's shareholders