Lube-for-Less is a car-care centre specializing in ten-minute oil changes. Lube-for-Less has two service bays, which limits its capacity to 3,600 oil changes per month. The following information was collected over the past six months:

1. Prepare a scatter plot graphing the volume of oil changes (x-axis) against the company€™s monthly operating expenses (y-axis). Graph by hand or use Excel.
2. How strong does the relationship appear to be between the company€™s operating expenses and the number of oil changes performed each month? Explain. Does there appear to be any outliers in the data? Explain.
3. Based on the graph, do the company€™s operating costs appear to be fixed, variable, or mixed? Explain how you can tell.
4. Would you feel comfortable using this information to project operating costs for a volume of 4,000 oil changes per month? Explain.

Month January February March. April. May. Number of Oil Changes 3,400 2,700 3,000 2,900 Operating Expenses $36,800 $32,100 $33,300 $32,900 $37,700 $34,100 . 3,500 . 3,100 une...