Answer:
Hi I really want to check my answer to this question, so if anyone could give it a try that would be very much appreciated!
Step-by-step explanation:
if this is wrogn sorry
The axis of symmetry of a parabola in the form

is a vertical line

where k is the x coordinate of the vertex of the parabola.
The x coordinate of the vertex of the parabola is given by

which in your case is

So, the axis of symmetry is the line x=12.
Answer:
3
Step-by-step explanation:
9.4 years would be the answer