Rio's Bus Tours has incurred the following bus maintenance costs during the recent tourist season. (Therealis Brazil's national monetary unit. On the day this exercise was written, therealwas equivalent in value to .269 U.S. dollar.)

MonthMiles Traveled by Tour Buses Costs

November14,250$18,100 real

December16,900$18,400

January19,550$18,550

February23,500$19,000

March31,000$19,660

April13,000$17,500

1.Using the high-low method to estimate, what would be the variable cost per tour mile traveled and the fixed cost per month.

2.What would be a formula to express the cost behavior exhibited by the company's maintenance cost.

3.What prediction level of maintenance cost would be incurred during a month when 39,000 tour miles are driven.