I'm supposed to determine if this was answered correct or wrong. what is it? also explain it.

It was answered correctly.

Step-by-step explanation:

Parenthesis means mutiplication so you can do iy rhat way or 4(c)^2=4×c^2.

Input   output
      1     2 mm
      2     4 mm
      3     8 mm
      4     16 mm

The way I came up with this is that I took the thickness of the paper which would be 2 millimeters. Then when you fold it in half it would double to 4 millimeters and then you fold it again and you get 8 millimeters. Then again, which would be 16 millimeters and that would be the 4th and final that I figured out.

it would be a function because of vertical line test or vlt.