Answer:
i believe that it is 45
Step-by-step explanation:
the answer is 2x2+12z-5 (its also in the picture)
37.5% i believe! i’m not reallt sure if this is correct; but i believe it is. hope this helps!
I believe the statement that is always true is
A. Vertical angles are congruent
We have that

we know that
Is the equation of a vertical parabola open down
so
the vertex is a maximum
step 1
convert the equation of the parabola in the vertex form

the vertex (h,k) is the point (0,36)
Part a) The point on the graph where the height of the tunnel is a maximum is (0,36)
Part b) The points on the graph where the height of the tunnel is zero feet is when y=0
so
for y=0

the points are (-6,0) and (6,0)
see the attached figure