The controller of Carla Vista Industries has collected the following monthly cost data for analyzing the behaviour of electricity costs. January February March April May June July August September October November Total Electricity Costs $ 1,920 2,950 3,300 4,550 3,170 4,890 4,010 3,930 5,020 4,390 3,260 Total Machine Hours 250 340 460 690 430 790 650 560 680 615 340 October November December (a) Intercept 4,390 Slope 3,260 6,150 615 Calculate the unit variable costs and fixed costs using regression analysis for this mixed cost. Present your solution in the form of a cost formula. (Round answers to 2 decimal places, e.g. 2.45.) The cost equation is: $ 340 810 +$ units produced = Total cost