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 .269 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.

Use the high-low method to estimate the variable cost per tour mile traveled and the fixed cost per month. (Round "Variable cost per tour mile" to 3 decimal places.)

Variable cost per tour mile		real
Fixed cost per month		real

Develop a formula to express the cost behavior exhibited by the companys maintenance cost. (Round "Variable cost per tour mile" to 3 decimal places.

Maintenance Cost per month= real+ real X