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Zachary has 15 gallons of gas in his car at the beginning of a trip. Every hour Zachary drives, he uses 3 gallons of gas. Answer the questions below regarding the relationship between the gallons of gas remaining in the tank and the total hours driven.

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kkjaseee

Answer:

12

Step-by-step explanation:

Based on the given conditions, formulate: 15 - 3 calculate the sum or difference: 12

so the answer is:12