Whitehouse Company manufactures major appliances. Because of growing interest in its products, it has just had its most successful year. In preparing the budget for next year, its controller compiled these data: Using the high-low method, determine the variable electricity cost per machine hour. $ per machine hour Determine the monthly fixed electricity cost. Fixed Electricity Cost July $ December $ Estimate the total variable electricity costs and fixed electricity costs if 4,800 machine hours are projected to be used next month. Total variable costs $ Total fixed costs $ Estimated total electricity costs for next month $