TSuper Company accumulated the following data for a delivery truck. Month Miles Driven Total Cost June 11,860 $20,184 July " 12,400 $21,075 August 9,910 $16,968 September 11,600 $19,755 Do not enter dollar signs or commas in the input boxes. a) Using the high-low method, calculate the variable component of the total cost. Round your answer to 5 decimal places. Variable Cost per Unit: $ b) Using the high-low method, calculate the fixed component of the total cost. Round your answer to the nearest whole number. Fixed Cost: $ c) Calculate the total costs be if 12,390 miles were driven. Round your answer to 2 decimal places. Estimated Total costs: $