1) Equation for the line 2) show how the residual for the first observation is calculated. 3) Produce the line fit graph (all you have to do is check a box)

10-30 High-low method. Ken Howard, financial analyst at KMW Corporation, is examining the behavior of quarterly maintenance costs for budgeting purposes. Howard collects the following data on machine- hours worked and maintenance costs for the past 12 quarters: Machine-Hours Maintenance Costs Quarter $205,000 100,000 120,000 240,000 110,000 220,000 130,000 260,000 95,000 190,000 235,000 115,000 215,000 105,000 255,000 125,000 105,000 210,000 125,000 245,000 10 115,000 200,000 140,000 280,000 12