these answers are wrong please show me how to do it right,, highlight answers

Scatter Diagrams and High-Low Cost Estimation Assume the local Pearle Vision has the following information on the number of sales orders received and order-processing costs. Month orde 3,000 I,soo 2,800 2,300 1,200 2,000 Required a,aso 98.280 Sl,720 75, on (a.) use information from the high- and low-volume months to develop a cost-estimating equation for monthly order-processing costs. 168,000 (b.) Plotthe data on a scatter diagram. Usingthe information from representative high-and Iou volume months, develop a cost estimating equation for monthly production costs. If needed, an Excel worksheet is provided in the following linkin order to create the scatter diagram: Scatter_Diagram 17,023 + 28.721