Let f(x) = x^2 - 2x. what is the value of f(2)?
a.
0
b.
2
c.
4
d.
8
e.
16

This is stating that, if x was 2, what is the answer to the equation. 
So basically, the equation is 2^2 - 2(2) = ? 
The first step is 2 squared, which is 4, then you subtract 2(2) or 4. So 4-4 is 0. 
The value of f(2) is 0 
A would be correct.

A: 0 because if you replace all the x's with 2 you would have 2^2-2*2 which equals 4-4=0

It would be choice c as the correct answer choice.