20. (8 points) Ebele Company incurred the following: a. Using the high-low method to analyze mixed costs and the data above, provide the cost equation that can be used to estimate Utilities Expense. b. Ebele estimates 475 kilowatt hours will be used in the next period. What is the estimate of Utilities Expense at 475 kilowatt hours? c. Although the high-low method is not the most accurate method to estimate costs, this method is often used for cost estimation. Why is the high-low method often used to estimate costs? 20. (8 points) Ebele Company incurred the following: a. Using the high-low method to analyze mixed costs and the data above, provide the cost equation that can be used to estimate Utilities Expense. b. Ebele estimates 475 kilowatt hours will be used in the next period. What is the estimate of Utilities Expense at 475 kilowatt hours? c. Although the high-low method is not the most accurate method to estimate costs, this method is often used for cost estimation. Why is the high-low method often used to estimate costs