# Dogde Caliber

The petrol kilometers M (unit: kilometers per liter) of the Dodge Caliber car is modeled by the function:

$M(s)=−1/28s_{2}+3s−31$

What is the car's best petrol kilometers, and what speed is attained?

$M(s)=−1/28s_{2}+3s−31$

What is the car's best petrol kilometers, and what speed is attained?

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