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		15,300			18,800		real
December		17,600			19,100
January		19,900			19,250
February		24,200			19,700
March		31,700			20,900
April		13,700			18,200

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 46,000 tour miles are driven.