Felinas Inc. produces floor mats for cars and trucks. The owner, Kenneth Felinas, asked you to assist him in estimating his maintenance costs. Together, Mr. Felinas and you determined that the single best cost driver for maintenance costs was machine hours. Below are data from the previous fiscal year for maintenance expense and machine hours Maintenance Machine Month Expense Hours 1 $3,120 2,200 2 3,310- 2,300 3 3,490 2,400 4. 3,620 2,430 5 3,620 2,280 6 3,680 2,440 7 3,610 2,420 8 3,420 2,390 9 3,140 2,210 10 2,880 2,080 11 2,780 1,690 12 2,940 2,070 Using the high-low method, unit variable cost is calculated to be