Samson Company is trying to determine the variable and fixed portions of its monthly truck operating costs and feels that miles driven would be a good volume measure. Presented below are the data for the past 6 months on total costs and miles driven: Miles Total Cost January 1200 $450 February 1150 $438 March 940 $415 April 900 $405 May 980 $420 June 1030 $428 Using the high-low method, calculate total fixed cost