Question

http://assets.openstudy.com/updates/attachments/5076d974e4b0ed1dac5029b4-gabriellagurl101-1349966271944-problems.pdf

Answer 1

help me

Answer 2

1) open circle means not to include that value, a closed circle means to include that value.
\[x\ge 5\] would have a closed circle at x=5 since it includes 5.
\[x>5\] would have an open circle at 5 since it does not include 5.