Rio Bus Tours has incurred the following bus maintenance costs during the recent tourist season. (The real is Brazils national monetary unit. On the day this exercise was written, the real was equivalent in value to 0.2545 U.S. dollar.)

Month	Miles Traveled by Tour Buses			Cost
November		15,750			19,100		real
December		17,900			19,400
January		20,050			19,550
February		24,500			20,000
March		32,000			21,470
April		14,000			18,500

Required: 1. Use the high-low method to estimate the variable cost per tour mile traveled and the fixed cost per month. 2. Develop a formula to express the cost behavior exhibited by the companys maintenance cost. 3. Predict the level of maintenance cost that would be incurred during a month when 49,000 tour miles are driven.