D because a has to be younger than 18 and it has to be positive because we are never a negative age. do you understand when i mean?
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1. 900 gallons will be burned in 3 hours.
2. 50 gallons of gasoline weighs 300 pounds.
3. 2,124 = 59 yards
4. The person weighs 48 pounds
5. 12 people = 6 tablespoons
