3. Utility costs at one of Hambley Corporation's factories are listed below: Machine-Hours Utility Cost February 4,221 $39,308 March 4,268 $39.573 April 4.234 $39,392 May.. 4,237 $39,394 4.299 $39.787 July 4,318 $39.881 August 4.305 $39,798 September......... 4,308 $39,831 October 4,226 $39,315 June Management believes that utility cost is a mixed cost that depends on machine-hours. Required: Estimate the variable cost per machine-hour and the fixed cost per month using the high-low method. Show your work