Answer:
open circle means less than OR greater to
closed circle means less than or equal to OR greater than or equal to
Answer:

Step-by-step explanation:
The given expression is 
We want to find the value of h(-9).
We substitute r=-9 to obtain:

We multiply out to obtain:

We simplify the denominator to obtain:

This is the same as:

Answer:
(x+5) and (x-2)
Step-by-step explanation:
+5 and -2 multiply to 10 and add up to +3.
Answer:
[See Below]
Step-by-step explanation:
Here are some pictures to help you.
I do not know the answer but i do know that PI is 3.14159265359