Mountain Dental Services is a specialized dental practice whose only service is filling cavities.

Mountain has recorded the following for the past nine months:

Required:
1. Use the high-low method to estimate total fixed cost and variable cost per cavity filled.
2. Using these estimates, calculate Mountain’s total cost for filling 500 cavities.
3. How closely does your estimate match the actual cost for March? If they are different, explainwhy.

Number of Cavities Filled 0 Month Total Cost January February March April May June July August September $5,600 6,000 4,500 4,100 4,500 3,200 3,500 4,900 5,400 450