Part B: Best Corporation has the following data for 9 months of utilities cost. Using the high-low method do the following: 4. Determine the cost function (equation) 5. Using the function (Equation) in step 4 determine total cost at 1,700 mhrs. Month Utility Cost Mhrs 1 s 120,000 2,200 2 $ 180,000 6,000 3 S 160,500 5.400 4 S 170,000 5,600 5 146,600 2,000 6 152,900 3,800 7 162,000 4,60 8 149,000 3,500 9 176,000 5,800 waniu