5.7 gallons
if you divide 279 / 49 it = 5.69, which you would just round up to 5.7
You need to do something like that your self so sorry can help.
let the actual height of car be x
now, according to question,
I don't know much about this, but probably the reason why your teacher circled 300k is because of what's in the photo below. If you couldn't tell from the photo, its because 300k isn't negative. Anyway this is my guess, based on my limited knowledge.