The controller of Carla Vista Production has collected the following monthly expense data for analyzing the cost behavior of electricity costs. Total Machine Hours 270 320 450 685 400 January February March April May June July August September October November December Total Electricity Costs $2,450 3,100 3,570 4,700 3,240 4,870 4,120 3,950 5,020 4,260 3,250 6,300 800 650 580 670 630 320 820 (a) * Your answer is incorrect. Determine the fixed- and variable-cost components using the high-low method. Fixed-costs $ 7 Variable-costs $ 560