If you know part C please add

COSTS. Total Machine Hours Total Electricity Costs $2,370 2.920 January February March 210 390 3,580 470 April 4,530 690 May 3,210 470 June 4.980 790 July 4,150 625 August 3.850 530 5,160 665 September October 4.240 605 November 3.240 390 December 6,570 810 (a) Your answer is correct Determine the fixed-and variable-cost components using the high-low method. Fixed-costs $ 900 Variable cost per machine hour 7 e Textbook and Media Assistance Used Attempts: 1 of 2 used (b) What electricity cost does the cost equation estimate for a level of activity of 470 machine hours? Electricity costs $ By what amount does this differ from March's observed cost for 470 machine hours? Amount differ $ eTextbook and Media Assistance Used Save for Later Attempts: 0 of 2 used Submit