CALCULATOR Exercise 22-18 a,c The controller of Sandhill Industries has collected the following monthly expense data for analyzing the cost behavior of electricity costs Total Electricity Costs Total Machine Hours $1,950 260 350 500 685 480 700 650 510 660 640 350 720 January February March April 2,950 3,520 4,590 3,170 4,910 4,040 3,950 5,120 4,210 3,280 6,110 June uly August September October xcel) (Round fixed cest to 3 decimal places e.g. 1.252 and variable Determine the fixed- and variable-cost components using regression analysis (We recommend the use of E decmal places o.g. 1.25125 Fixed costs What electricity cost does the cost equation estimate for a level of activity of 500 machine hours? Eletricity costs By what amount does this differ from March's abserved cost for 500 machine hours? (Round answar te 2 dacima Amount difTer s Round answer to 2 decimal places e.g. 1.25.)