How would an increase in the income tax rate affect the calculation of a project proposal's payback period and simple rate of return, respectively? Not affect the payback period and decrease the simple rate of return Not affect either the payback period or the simple rate of return. Increase the payback period and not affect the simple rate of return Increase the payback period and decrease the simple rate of return. Decrease the payback period and not affect the simple rate of return Jenkins is considering investing in a project that will require an initial investment of $200,000 and will generate cash flows of $52,757 per year for five years. Jenkins requires a 12% retur on all investments. If Jenkins uses the net present value and internal rate of return methods respectively, would Jenkins accept/reject the investment? Reject using either net present value or internal rate of return Accept using net present value and reject using internal rate of return. Reject using net present value and accept using internal rate of return. Accept using either net present value or internal rate of return. If the internal rate of return on a project exceeded the discount rate the net present value of the project would be positive negative zero. Henrie's Draper Service is investigating the purchase of a new machine for cleaning and blocking drapes. The machine would cost $144,200. Henne's has estimated the new machine would increase the company's cash inflow by $40,000 per year. The machine would have a five year useful life and no salvage value. What is the machine's internal rate of return? 15% 12% 3.6% 27.7% 10%