I'm pretty sure your right. the answer is mantle.
Answer:

<h3>First answer is correct</h3>
Step-by-step explanation:

Answer
2.25
Step-by-step explanation:
Okay so in a gallon there are 16 cups, in this case 100 cups is equivalent to 6.25 gallons. 6.25 times 3.12= 19.5
Therefore $19.5 is how much the gas cost!
The correct answer would be (4,-5)