Cubicle Solutions sells productivity software such as word processors, spreadsheets, and personal information managers. Cubicle prides itself on customer support and maintains a large call center where customers can call in with technical questions about the installation and use of Cubicle products. Monthly data on the number of support calls and call center costs for the last year have been collected and are shown as follows (all activities and costs are in thousands): Call Center Cost $569 Month Support Calls: 1 46 2 58 690 3 54 680 4 48 580 5 64 740 6 56 700 7 53 680 8 57 710 9 60 700 10 49. 635 11 51 12 50 655 640 Required: a. Estimate the monthly fixed costs and the unit variable cost per support call using the high-low estimation method. (Round variable cost per unit to 2 decimal places. Enter your answer in thousands of dollars.) Overhead Costs por call xSupport calls