Speed vs Gas Mileage
An economist wanted to analyze the relationship between the speed of a car (x)and its gas mileage (y).As an experiment a car is operated at several different speeds and for each speed the gas mileage is measured.These data are shown below. 
-{Car Speed and Gas Mileage Narrative} Estimate the gas mileage of a car traveling 70 mph.
Definitions:
Fixed Costs
Costs that do not vary with the level of output or production, such as rent or salaries.
ATC
Average total cost is found by dividing the overall production cost by the number of units produced.
Marginal Revenue
The additional income generated from the sale of one more unit of a product or service.
AVC
Stands for Average Variable Cost, which is the total variable costs (costs that vary with production levels) divided by the quantity of output produced.
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