Solve the problem.Carole's car averages 15.7 miles per gallon in city driving and 24.6 miles per gallon in highway driving. If she drove a total of 275.3 miles on 13 gallons of gas, then how many of the gallons were used for city driving?
A. 7 gallons
B. 8 gallons
C. 13 gallons
D. 5 gallons
Answer: D
Mathematics
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A. No B. Yes
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A. -63b9
B. 
C. 63b9
D. 
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A. 
B. 
C. 
D. 
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Solve.The city where Lu Na lives has a population of 2,273,468 people and an area of 155.2 square miles. What is the rate of number of people per square mile (i.e., the population density)?
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Mathematics