We have a table that represents a parabola.
The vertex will represent the extreme point of the parabola where the minimum or maximum value happens.
In this case, we can see that for x = 5, we have an extreme value of y = 1125.
We can also check that for x = 3 and x =7, 2 units from x = 5, we have the same value (y = 1105).
Then, we have to have the vertex at point (5, 1125), as we have an axis of symmetry in the line x = 5.
The value for y for the vertex is then y = 1125.
Answer: 1125
