For which of the following reasons would determining how costs behave not be helpful to managers? Estimating costs Predicting customer demand Predicting profits as sales and production volumes change Changing an existing product production Which of the following would be classified as variable costs? Sales commissions and costs of providing online support Salaries of human resources personnel and straight-line depreciation of computer equipment The CEO's salary Property taxes on general offices and the lease of the corporate office Question 6 (4 points) Listen The most appropriate activity bases for calculating the fuel cost for a delivery service firm would be: number of truck drivers. number of packages picked up. total miles driven. number of trucks in service