Brazilia Bus Tours has incurred the following bus maintenance costs during the recent tourist season. (The real is Brazil's national monetary unit. On the day this exercise was written, the real was equivalent in value to .5092 U.S. dollar.) Miles Traveled by Tour Buses 13,800 16,600 19,400 23,200 30,700 12,700 Maintenance Month November December January February March OS 19,900 real 18,100 18,250 18,700 19,900 17,200 ril Required 1. 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 Fixed cost per month real real 2. Develop a formula to express the cost behavior exhibited by the company's maintenance cost. (Round "Variable cost per tour mile" to 3 decimal places.) Maintenance cost per month real+ real X 3. Predict the level of maintenance cost that would be incurred during a month when 36,000 tour miles are driven Maintenance cost rea