The following data pertains to activity and maintenance costs of Dubai Company for two recent yeas: Year 2 Year 1 Activity level in units 12,000 8,000 Maintenance cost. $15,000 $12,000 Required: 1. Using the high-low method, calculate the cost formula for the company maintenance. 2. Using the cost formula you computed above, what amount of total maintenance cost would you expect to be incurred if the level of activity is 10000 units