Question 6 of 9 0/530 The controller of Oriole Production has collected the following monthly cost data for analyzing the behavior of electricity costs. JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecemberTotalElectricityCosts$2,5802,9203,5804,7503,2504,8804,0603,8805,0604,2103,3707,710TotalMachineHours240380470695410790620570675620380810 Determine the fixed costs and unit variable costs using the high-low method. eTextbook and Media (b) What electricity cost does the cost equation estimate for a level of activity of 470 machine hours? Electricity cost $ By what amount does this differ from March's observed cost for 470 machine hours