The answer is the 1st graph. This is because a square have 4 sides and it is all the same. on the x axis (Side length) when it is 4 the perimeter (Length around the outside) will be 4 x 4 which is 16.
Hope this helps?
The answer is B. Use distance formula...
40,000
9,000
200
50
4
I'm guessing that's what you were looking for?
60 miles because 2160 divided by 36 = 60