the answer is 12 because if you look at the position of the y axis when x equals 2 then look at the y value when x equals 4 you will get the 2 numbers 4 and 16 now subtract 16 by 4 and you get 12.
they are moving on a moving object
if they went onward with the bus going forward, they would go mph faster;
The answer should be about 13 as the sequence over 5 number is increasing by 20 so over each interval it should increase by 4.
27.5 Gallons of gas was used by two cars.
Hope this help if not i'm sorry.
I belive it might be a right triangle