24.. Slonaker Inc. has provided the following data concerning its maintenance costs: Machine-Hours April May 5.799 Maintenance Cost $30.379 5.782 $30.289 June 5.764 $30.237 July 5,761 $30,233 August 5.717 $30,078 September... 5.795 $30.360 October 5.800 $30.388 November 5.801 $30,378 December 3,7831 $30.318 Management believes that maintenance cost is a mixed cost that depends on machine-hours. Using the high-low method: 1. Estimate the variable cost per machine-hour 2. Estimate the fixed cost per month. 3. Create a cost formula using the high-low method. 4. Estimate the Total Cost for 7000 machine-hours"