The fuel efficiency (in miles per gallon) of a sport utility vehicle (SUV) depends on its weight according to the formula
?
?
where x is the weight of an SUV in pounds. According to the model, what is the weight of the least fuel-efficient SUV?
?
A. 3,000 pounds
B. 3,100 pounds
C. 2,000 pounds
D. 6,000 pounds
E. 491 pounds
Answer: A
Mathematics
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