The controller of Pharoah industries has collected the following monthly cost data for analyzing the behavior of electricity costs. decimal places e.g. 1.252 and variable cost to 5 decimal places e.g. 1.25125.) Fixed costs Unit variable costs /machine hour eTextbook and Media 2. Your answer is incorrect. What electricity cost does the cost equation estimate for a level of activity of 480 machine hours? (Round unit cost and final answers to 2 decimal places eg. 1,250.25.) Electricity costs $ By what amount does this differ from March's observed cost for 480 machine hours? (Round answer to 2 decimal places e.g. 1.25.) Amount differ