help please!

Question 20 24 pts Grimason Organization is considering the purchase of a machine with a cost of $90,000, a useful life of 10 years and a salvage value of $10,000. It projects the machine to contribute $7,500 in NET INCOME. The company depreciates all fixed assets using the straight-line method. Grimason Organization requires a 8% rate of return. A) What is the payback period? (6 points) B) What is the average accounting rate of return? (6 points) C) What is the net present value and the profitability index? (6 points) D) Assume for purposes of "D" only that there was NO salvage value. What is the estimated INTERNAL RATE OF RETURN, to the nearest full percent? (6 points) Label your answers. SHOW YOUR WORK FOR POTENTIAL OF EARNING PARTIAL CREDIT IN THE CASE OF AN INCORRECT