Office Supplies Inc. recently reported $25,000 of sales, $12,500 of operating costs other than depreciation, and $1,500 of depreciation. It had $10,000 of bonds outstanding that carry a 4% interest rate, and its federal-plus-state income tax rate was 40%. How much was the firm's earnings before taxes (EBT)

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.)