Hi can you please help solve me this? Please explain in detail how you got the answer and please don't copy and paste the answer from Chegg like the previous tutor did!!

Schotte Manufacturing Company uses two different independent variables (machine- hours and number of packages ) in two different equations to evaluate costs of the packaging department. The most recent results of the two regressions are as follows: Machine-hours: Variable Coefficient Standard Error t-Value Constant 748.30 341.20 2.19 Independent Variable 52.90 35.20 1.50 12 = 0.33 Number of packages: Variable Coefficient Standard Error t-Value Constant 242.90 75.04 3.24 Independent Variable 5.60 2.00 2.80 12 = 0.73 Required: a. What are the estimating equations for each cost driver? b. Which cost driver is best and why