A mobile telephone network provider provides the following 6 month record of number of calls and related wage costs. Month No. of calls Wage costs July 11,200 $5,300 August 14,900 6,200 September 19,100 7,000 October 24,200 9,600 November 27,400 10,100 December 26,300 9,700 Required: Use the high-low method to calculate total fixed cost and variable cost per unit for the 6 month period. [5 Points]