Please show all rough work so I can understand the method used. Thank you!

2. For the information below, use the high-low method to determine the mixed cost equation. You must use both data for the high point, and the low point. You must show the equation (for both the high point and low point - meaning, you must to have TWO equations), not just what the variable cost is. - 4 marks Cost 2400 3100 2600 3000 2300 Units 26 40 28 36 24