High-Low Method. The City of Rockville reported the following annual cost data for maintenance work performed on its fleet of trucks.

Reporting Period (year) Total Cost Level of Activity (MilesDriven)
Year 1 $750,000 225,000
Year 2 850,000 240,000
Year 3 1,100,000 430,000
Year4 1,150,000 454,000
Year5 1,250,000 560,000
Year6 1,550,000 710,000

1- Use the four steps of the high-low method to estimate total fixed costs per year and the variable cost per year and the variable cost per mile. State your results in the cost equation form Y = f + vX

2-What would the estimated costs be if the trucks drove 500,000 miles in year?