Answer:

Step-by-step explanation:
we know that
The surface area of a sphere is equal to

we have

substitute


Answer:
81 and 91
Step-by-step explanation:
Answer:
D. x > -3
Step-by-step explanation:
open circle means its either < or > sign. arrow is pointing right which is greater than the number.
The zeros are -2, 1, and 2
If you graph it you can find out the rest