Question

Every hour driving uses 3 gallons of gas. Use a table to find how man you gallons of gas would be used if driving for 15 hours

Answer 1

After fifteen hours of driving, you would have used 45 gallons of gas. 

Answer 2

Hour-3 gallons
2 hour-6 gallons
5 hour- 15 gallons 
15 hour- 45 gallons
For every hour he uses 3 gallons
3 times 15 equals 45 gallons