Need help with part B

A department of Alpha Co. incurred the following costs for the month of September. Variable costs, and the variable portion of mixed costs, are a function of the number of units of activity: 4,500 Activity level in units Variable costs Fixed costs Mixed costs Total costs $9,000 31,000 21,500 $61,500 During October the activity level was 8,000 units, and the total costs incurred were $69,500 Required a. Calculate the variable costs, fixed costs, and mixed costs incurred during October Variable cost Fixed cost Mixed cost October $ 16,000 $ 31,000 $ 22,500 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.) t formula 0.29 per unit