The controller of Sheridan Production has collected the following monthly expense data for analyzing the cost behavior of electricity costs, Total Electricity Costs Total Machine Hours January $2.380 200 February 3.010 390 March 3,600 490 April 4,800 690 May 3.150 500 June 4.900 710 July 4,040 645 August 3.880 530 September 5.060 675 October 610 4,200 November 3.390 390 December 6,090 700 P ** Modly doully What electricity cost does the cost equation estimate for a level of activity of 710 machine hours? Electricity costs $ By what amount does this differ from June's observed cost for 710 machine hours? Amount differ 5