Adora’s car averages 28 miles per gallon of gas. Approximately how many gallons of gas should she expect to use for a trip of 190 miles?

Adora’s car averages 28 miles per gallon of gas. Approximately how many gallons of gas should she expect to use for a trip of 190 miles?
A . 3
B . 5
C . 7
D . 9
E . 10

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Answer: C