Speedy Delivery Services has the collected the following information about operating expenditures for its delivery truck fleet for the past five years:
Year Miles Operating Costs
2007 110,000 $390,000
2008 140,000 $420,000
2009 100,000 $360,000
2010 130,000 $410,000
2011 150,000 $440,000
a. Using the high-low method, what is the cost estimate for variable costs for 2012?
b. Using the high-low method, what is the cost estimate for fixed costs for 2012?
c. What is the best estimate of total operating expenses for 2012 using the high-low method based on total expected miles of 120,000?