1024 is the answer to this problem.
Answer:
the second one
Step-by-step explanation:
The combo is 4592 I think
The correct answer would be B E'F' and EF are equal in length.
ANSWER
The vertex of the graph of

is

EXPLANATION
The vertex form of a parabola is given by

where

is the vertex of the parabola.
The function given to us is

This is already in the vertex form.
When we compare this to the general vertex form, we have,


and

Therefore the vertex of the parabola is

Hence the correct answer is option A.