Question

Please help! :)
None of the boundaries are included in the solution set of which system?

Answer 1

B

Answer 2

im assuming you know the meaning of an open and closed circle on the graphs?

Answer 3

i guess i'll explain it anyway lol.. a closed circle means that a number is included, an open one means that its not.

so when you draw these graphs, the only time you have a closed circle is when you have a greater/less or equal to sign. so if none of them has an equal sign underneath then that boundary is not included

Answer 4

Haha thank you! Yes, I do know the meaning of an open/closed circle. :)

Answer 5

glad to help