Use the high-low method to determine the variable and fixed cost components of Rapid Lube's operating costs. Use this information to project the monthly operating costs for a month in which the company performs 3,100 oil changes. (Click the icon to view the data.) Use the high-low method to determine the variable and fixed costs components of Rapid Lube's operating cost equation. First identify the formula and calculate the variable cost component (slope). (Round your answer to the nearest cent.) 4 = Variable cost per unit Data Table Month Number of Oil Changes Operating Expenses 2,900 $ 38,500 January February 2,300 34,500 Marchi 2,500 35,500 $ $ $ $ $ $ April ... 2,400 35,000 3,300 May June 39,500 36,000 . 2,600