The controller of Oriole Industries has collected the following monthly expense data for analyzing the cost behavior of electricity costs Total Electricity Costs Total Machine Hours January $2,160 210 February 2.970 360 March 3,540 500 April 4,640 695 May 3,220 490 June 4.910 700 July 4,120 620 August 3,800 570 September 5,160 675 October 4,340 600 November 3,300 360 December 6,070 720 Solution Attempts: 3 of 3 used (c) What electricity cost does the cost equation estimate for a level of activity of 500 machine hours? (Round answer to 2 decimal places eg. 1.25.) Electricity costs By what amount does this differ from March's observed cost for 500 machine hours? (Round answer to 2 decimal places es. 1.25.) Amount differ $ e Textbook and Media