a company is considering the purchase of a new piece of equipment for $90,000. it is expected to produce the following net cash flows. the payback period is: year 1 year 2 year 3 year 4 year 5 net cash flows $ 36,000 $ 30,000 $ 18,000 $ 12,000 $ 6,000 group of answer choices 4.50 years. 4.25 years. 3.50 years. 3.00 years. 2.50 years.