Can you please provide detailed steps on how to work each problem out. I dont even know how to begin the question or where to start. Thank you

High-Low Cost Estimation and Simple Regression Analysis The Blacksburg Company is separating materials handling cost into fixed and variable components. The following data have been collected over a five-month period (all amounts are in thousands): 3-26 Direct Cost of Materials $7 $1.60 1.70 1.80 1.90 2.00 Required: (1) Determine the fixed and variable materials handling cost by the high-low method using direct labor hours as the measure of volume. (2) Determine the fixed and variable materials handling cost by the method of least squares using direct labor hours as the measure of volume. (3) Repeat (2) using cost of materials issued as the measure of volume. (4) Which of the two measures of volume in (2) and (3) seems preferable? Why? 3-27 High-Low Cost Estimation and Simple Regression Analysis Assume we have the following observations relating to overhead costs and direct labor hours for Department A of the ABC Company Direct 15 20 14 13 18 15 12 16 18 19 40 50 35 30 36 31 41 42 45 57