4 because it is the only number on the x side of the table that you can get a single value for y from
24 / 30 x 100 = 80
answer: <span>Twenty-four is 30% of 80</span>
Answer: 29 miles per gallon.
Reasoning: 856 miles/29.4 gallons = 29.1156462585 (rounded to the nearest mile = 29)
Hope this helped!