See attached picture for the answer:
you don't say how to round the answer so I did not round it.
Answer:
-3x^2 - 5y^2 = 36
Step-by-step explanation:
x^2+y^2=r^2
Answer:
Maximum value:
the maximum value is 
Minimum value:
the minimum value is 7
Step-by-step explanation:
We are given function as

Firstly, we will draw graph
we can see the graph
and then we can identify maximum and minimum
Maximum value:
We know that
the largest y-value means maximum value of f(x)
We can see that curve is moving upward
so, the maximum value is 
Minimum value:
We know that
the smallest y-value means minimum value of f(x)
we can see that
It starts from point (5,7)
so, the minimum value is 7