I just need part C.

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The controller of Pharoah Production has collected the following monthly cost data for analyzing the behavior of electricity costs. Your answer has been saved. See score details after the due date. Determine the fixed costs and unit variable costs using the high-low method. Total fixed costs $ Your answer has been saved. See score details after the due date. What electricity cost does the cost equation estimate for a level of activity of 500 machine hours? Electricity cost $ By what amount does this differ from March's observed cost for 500 machine hours? What electricity cost does the cost equation estimate for a level of activity of 790 machine hours? Electricity cost $ By what amount does this differ from June's observed cost for 790 machine hours