Answer:
G(t)=12-2t
Step-by-step explanation:
Okay, first we need to find out how many gallons he lost, so we multiply 2 by 3 and get 6 gallons used.
Next, now knowing 6 gallons are left and 6 have been used we now add to get 12 gallons originally.
Then, now that we have the rate of change and the starting number we put together the equation to the way that best suits the question
Last, to check our work plug six into t next to the two and solve to get six gallons used,
I hope this helps you
If i am right a thanks would be appreciated if i am wrong please leave a comment