EX 6-30 (Static) High-Low Method; Tour Company (LO 6-1, 6-2, 6-5) [The following information applies to the questions displayed below.] Rio 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 0.2545 U.S. dollar.] Month November Miles Traveled by Tour Buses 8,500 Cost 11,400 real December 10,600 11,600 January 12,700 11,700 February 15,000 12,000 March April 20,000 12,500 8,000 11,000 EX 6-30 (Static) Part 1: Rio Bus Tours has incurred the following bus maintenance costs... 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 company's maintenance cost. 3. Predict the level of maintenance cost that would be incurred during a month when 22,000 tour miles are driven.