Current Attempt in Progress The controller of Crane Production has collected the following monthly expense data for analyzing the cost behavior of electricity costs Total Electricity Costs Total Machine Hours January $2.480 230 February 2.930 370 March 3.520 460 April 4,620 685 May 3,190 420 June 4.960 790 July 4.060 620 August 3,870 550 September 5,090 670 October 4,370 605 November 3.360 370 December 6.540 810 What electricity cost does the cost equation estimate for a level of activity of 460 machine hours? Electricity costs By what amount does this differ from March's observed cost for 460 machine hours? Amount differ