No one is helping me can someone please answer and explain I really don’t understand I’ll mark brainliest

Basically he is saying that how many gallons did it take to reach 355 miles. Per 40.

So Basically how many gallons per 40 miles did it take to reach 355 miles.

Step-by-step explanation:

Now he minus 6 by 10 to see how many gallons were left

I don't why they multiply by 25 but they multiply 4 by 40 since it's the amount of miles on the freeway. Then they added it to see if it equales to 355 or not.

And the Answer to the guess and check thing is 3. The city gallon is 3

you minus 3 by 10 and get 7. then multiply 3 by 25 get 75 then add that to 7 times 40 and you get a perfect 355

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.