Really Fast 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

2013 55,000 $188,500

2014 70,000 $214,000

2015 50,000 $180,000

2016 65,000 $205,500

2017 85,000 $239,500

The equation representing the relationship between the operating costs (Y) and miles (X) is:

a. Y = $95,000 + $1.70X

b. Y = $95,000-$1.70X

c. Y = $115,500 + $1.70X

Y = $1.70