Gas mileage The number of miles M that a certain com- pact car can travel on 1 gallon of gasoline is related to its speed v (in mi/hr) by м v2 +v for 0

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Solve the inequality, and express the solutions
in terms of intervals whenever possible

Gas mileage The number of miles M that a certain com-
pact car can travel on 1 gallon of gasoline is related to its
speed v (in mi/hr) by
м
v2 +v for 0 <v< 70.
For what speeds will M be at least 45?
Transcribed Image Text:Gas mileage The number of miles M that a certain com- pact car can travel on 1 gallon of gasoline is related to its speed v (in mi/hr) by м v2 +v for 0 <v< 70. For what speeds will M be at least 45?
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