Total Factory Overhead Costs (FOH) information of a factory for the past eight months are given below: Required: (10 points) 1. Using the high-low method, determine the formula for total Factory Overhead Costs. 2. Using the cost formula you derived above, what total FOH costs would you expect to be incurred during a month in which 6,000 units are produced? 3. The following cost function was the result of a least-squares regression analysis: Y=$8,404+$18.84XR2==0.9199 4. Should the manager use the high-low or the regression method? Explain your