please help me get this right :/

The following information is available for a company's maintenance cost over the last seven months. Maintenance Maintenance Month Hours Cost June $ 5,450 July 18 6,900 August 12 5,100 September 6,000 October 6,900 November 8,100 December 3,600 15 Using the high-low method, estimate both the fixed and variable components of its maintenance cost. High-Low method - Calculation of variable cost per maintenance hour Total cost at the high point Variable costs at the high point: Volume at the high point: Variable cost per maintenance hour Total variable costs at the high point Total foxed costs Total cost at the low point Variable costs at the low point: Volume at the low point: Variable cost per maintenance hour Total variable costs at the low point Total fixed costs