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#39185

applications

quadratic equations

medium

120 sec

Calculator OK

A car's fuel efficiency, $M (s)$ , in miles per gallon (MPG), when traveling at a speed of $s$ miles per hour (MPH), is modeled by a quadratic function. The car achieves its maximum fuel efficiency of $40$ MPG at a speed of $50$ MPH. At a speed of $70$ MPH, the fuel efficiency is $32$ MPG. What is the estimated fuel efficiency, to the nearest MPG, of the car when traveling at a speed of $30$ MPH?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.