What am I doing wrong?

! Required information [The following information applies to the questions displayed below.] Felix & Company reports the following information. Period 1 2 3 4 5 Units Produced 0 400 800 1,200 1,600 2,000 2,400 2,800 3,200 3,600 Total Costs $ 2,500 3,100 3,700 4,300 4,900 5,500 6,100 6,700 7,300 7,900 6 7 8 9 10 (1) Use the high-low method to estimate the fixed and variable components of total costs. (2) Estimate total costs if 3,000 units are produced. High-Low method tion of Variable cost per unit $ 5,400 Variable cost per unit Cost at high point minus cost at low point S 1.50 Volume at high point minus volume at low point 3,600 High-Low method - Calculation of fixed costs Total cost at the high point $ 7,900 Variable costs at the high point Volume at the high point 3,600 units $ 1.50 Variable cost per unit Total variable costs at the high point Total fixed costs 5,400 $ 2,500 $ 2,500 0 units Total cost at the low point Variable costs at the low point Volume at the low point Variable cost per unit Total variable costs at the low point Total fixed costs $ 1.50 0 2,500 (2) Estimated cost if 2,730 units are produced: Estimated total cost $ 6,595