Need help with the following question. Thanks for your help.

Assume the Paul's Custom Print Shop has the following information on the number of sales orders received and order-processing costs. Month Jan Feb Mar Apr May Jun Jul Sales Orders 450 225 690 420 345 150 300 Order-Processing Costs $6,000 4,200 9,750 5,850 4,800 3,000 4,500 a) Develop a cost estimation equation for monthly production costs using the regression method. You may use a statistics program to make the calculations or you may use the graph formatting function in Excel