Answer:
The range is [7, -infinity)
Step-by-step explanation:
Since the leading coefficient is negative and it is a degree 2 polynomial, it is a parabola opened for downwards.
Answer:
The answer is 12 units.
Step-by-step explanation:
Looking at the figure we see that

and

Now from equations (1) and (2) we have values for
and
so we put those into the equation (3) and get:



Therefore the answer is 12 units.