Dinkins Inc. is considering disposing of a machine with a book value of $50,000 and an estimated remaining life of five years. The old machine can be sold for $15,000. A new machine with a purchase price of $150,000 is being considered as a replacement. It will have a useful life of five years and no residual value. It is estimated that variable manufacturing costs will be reduced from $70,000 to $45,000 if the new machine is purchased. The net differential increase or decrease in cost for the entire five years for the new equipment is

Suppose life expectancy in years (l) is a function of two inputs, health expenditures (h) and nutrition expenditures (n) in hundreds of dollars per year. the production function is upper l equals ch superscript 0.40 baseline upper n superscript 0.60l=ch0.40n0.60. beginning with c = 1, a health input of $400400 per year (hequals=44) and a nutrition input of $400400 per year (nequals=44), show that the marginal product of health expenditures and the marginal product of nutrition expenditures are both decreasing. the marginal product of health expenditures when h goes from 44 to 55 is nothing, and the marginal product of health when h goes from 66 to 77 is nothing. (round your answers to three decimal places.)