Please help with part B

Activity level in units Variable costs Fixed costs Mixed costs 5,500 $11,275 28,000 22,590 $61,865 Total costs During October, the activity level was 8,200 units, and the total costs incurred were $68,500 Required: a. Calculate the variable costs, fixed costs, and mixed costs incurred during October. Answer is complete and correct. October Variable cost $ 16,810 $ 28,000 Fixed cost Mixed cost $ 23,690 b. Use the high-low method to calculate the cost formula for mixed cost. (Do not round intermediate calculations and round your answers to 2 decimal places.) X Answer is complete but not entirely correct. Cost formula $ 0.41 X + $ 20,328.00 X per unit