The correct answer would be; <u><em>3 Gallons of Gas</em></u>.

<span>5+x+(−2)=−8
5 + x - 2 = -8
x + 3 = -8
x = -11</span>
Answer:
Yes it is a proportional relationship
Step-by-step explanation:
That is because 20 and 10 are your original and 40 and 20 and 60 and 30 match with it.