Mumier Incorporated produces floor mats for cars and tricks. The owner Kenneth Muffler asked you to assist him inestimating his maintenance costs. Together Mt. Muffler and you determined that the single best cost diver for maintenance costs was machine hours. Below are data from the previous fiscal year for maintenance expense and machine hours Month 1 2 3 5 Maintenance Expense $ 3.150 3,370 3.550 3.580 3.630 3.800 3,670 3,480 3.2ee 2,91e 2,818 2,978 machine Hours 2,230 2.330 2,430 2,450 2,310 2.480 2,45e 2,42e 2,24e 2,110 1,720 2.100 2 8 9 10 12 using the high-low method unit variable cost is calculated to be 6 & 7 8 9 O Y