Two gallons of gasoline cost $7.96, 5 gallons cost $19.90, and 12 gallons cost $47.76. Which equation gives the total cost y of x gallons? (It’s the first question, 7a. I don’t get it pls help will give “thanks” and brainiest answer)

y=3.98x

Step-by-step explanation:

y=3.98(2)= 7.96$

y=3.98(5)= 19.90$

y=3.98(12)= 47.76$

The number of gallons times 3.98 equals the price.

to find the unit price, we must figure out the cost of one item (in this case one dish towel).   to do this, we divide the total price ($7.92) by the number of items bought (for this problem it is 8, because there are eight dish towels in one pack).  

$7.92/8 = $0.99

therefore, the unit price, or the price of one dish towel, is $0.99.

hope this !