Answer:
49y
Step-by-step explanation:
7 x 7 x y= 49 x y = 49y

So the 2nd answer is correct: 1 / 3^5
26 miles per gallon is your answer you divide 208 miles by 8 finding out how many miles per gallon you drive. To check your answer you can multiply 26 times 8 and you get 208 miles.
The answer will be 120416857.5 hope this helped :)