The controller of Exxon Industries has collected the following monthly expense data for use in analyzing the cost behavior of maintenance costs.

1. Determine fixed and variable costs using the high-low method. You can use MS Excel If you wish. Write the equation of the line.
2. display a graph of the equation found in part a, showing the behavior of maintenance costs and identifying the fixed and variable cost elements. Use 100-hour increments and $1,000 cost increments for the graph.
3. display a scatter plot showing maintenance costs and machine hours for each month.

Month	Total Maintenance Costs	Total Machine Hours
January	$2,500	310
February	3,000	350
March	3,600	500
April	4,500	690
May	2,600	300
June	4,900	700