2.Lawson Lumber uses the highlow method to estimate utility cost, which varies in relation to machine hours. Based on the following data, how would the cost function be stated if X is the number of machine hours, assuming that the relevant range is between 300 to 1,000 machines hours? Month Utility Expense Machine Hours Jan $ 700 800 Feb $ 500 400 Mar $ 750 900 Apr $ 610 500 May $ 650 550