The controller of Wildhorse Production has collected the following monthly expense data for analyzing the cost behavior of electricity costs. Total Total Electricity Costs Machine Hours January $2,450 230 February 3,060 380 March 3,520 480 April 4,760 685 May 3,190 410 June 4,910 800 July 4,030 650 August 3,870 540 September 5,040 680 October 4,260 610 November 3,250 380 December 6,580 820Determine the fixed- and variable-cost components using the high-low method. Fixed-costs to Variable cost per machine hour $What electricity cost does the cost equation estimate for a level of activity of 480 machine hours? Electricity costs $ By what amount does this differ from March's observed cost for 480 machine hours? Amount differ $ What electricity cost does the cost equation estimate for a level of activity of 800 machine hours? Electricity costs $ By what amount does this differ from June's observed cost for 800 machine hours? Amount differ $