The controller of Cullumber Industries has collected the following monthly expense data for use in analyzing the cost behavior of maintenance costs.
Month Total Maintenance Costs Total Machine Hours
January $2,730 330
February 3,030 380
March 3,630 530
April 4,530 660
May 3,230 530
June 5,450 730
1. Determine the variable cost components using the high-low method.
2. Determine the fixed cost components using the high-low method.