The controller of Sandhill Production has collected the following monthly cost data for analyzing the behavior of electricity costs. Total Electricity Costs Total Machine Hours January $2,000 220 February 2,960 360 March 3,570 480 April 4,650 690 May 3,200 490 June 4,950 770 July 4,150 635 August 3,870 550 September 5,020 670 October 4,370 635 November 3,380 360 December 6,560 790 (c) What electricity cost does the cost equation estimate for a level of activity of 770 machine hours? Electricity cost $ By what amount does this differ from June's observed cost for 770 machine hours? Amount differ $ eTextbook and Media Save for Later Attempts: 0 of 2 used Submit