Please help me answer part B.

The controller of Crane Production has collected the following monthly expense data for analyzing the cost behavior of electricity costs. Your answer is correct. Determine the fixed- and variable-cost components using the high-low method. Fixed-costs $ Variable cost per machine hour $ eTextbook and Media b) 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