Septa Bus Company accumulates the following data concerning a mixed cost, using miles as the activity level. (a) Your answer is incorrect. Using the high-low method, determine the cost function for total costs using miles driven as a cost driver, separating the cost into its respective variable cost component and fixed cost component. (round cost per mile to 2 decimal places, e.g. 52.71.) The estimated cost function for Septa Bus Company cost is Y (Total Cost) mX+b (\$ per mile x 1+$