Answer:
B
Step-by-step explanation:
When the function is less than but equal to and it's opposite are always solid dots. By this you can do simple process of elimination.
Answer: 
<u>Step-by-step explanation:</u>

Answer:
simplest form is 7/8
Step-by-step explanation:
It's a computation. It would be 8!/3!(8-3)! If my memory serves me correctly.