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Use the high-low method to determine the variable and fixed cost components of Montrose Oil and Lube's operating costs. Use this information to project the monthly operating costs for a month in which the company performs 3,400 oil changes. Use the high-low method to determine the variable and fixed costs components of Montrose Oil and Lube's operating cost equation. First identify the formula and calculate the variable cost component (slope). (Round your answer to the nearest cent.) Next identify the formula and compute the fixed cost component (the vertical intercept) using the costs for the highest level of activity. (Round your answers to the nearest whole number.) Complete Montrose Oil and Lube's operating cost equation. (Enter the variable cost to the nearest cent anji the fixed cost to the nearest whole dollar.) y=x+ Use your answer from above to predict total monthly operating costs if Montrose Oil and Lube performs 3,400 oil changes. (Round your answer to the nearest whole dollar.) The total monthly operating costs if Montrose Oil and Lube performs 3,400 oil changes is