1) Kumar Co. is attempting to predict its maintenance costs more accurately. Maintenance costs are a mixed cost. Maintenance costs and machine hours for the first four months of the year are as follows: Month Jan. Feb. Mar. Apr. Required: Maintenance Costs $ 8,430 7,620 8,810 7,580 Machine Hours 1,320 1,190 1,430 1,130 Using the high-low method, calculate unit variable cost and monthly fixed costs. can you show every step please I want to understand it and type the answer on computer not written hands please !!!