Question 7 4 pts The length of time required for an investment to generate cash flows sufficient to recover the initial cost of the investment is called the net present value (NPV) internal rate of return (IRR) payback period (PBP) profitability index (PD Question 8 4 pts When two projects both require the use of the same limited economic resource, the projects are considered to be independent marginally profitable mutually exclusive internally profitable 4 pts