Question

I need to write these in interval notation but am having a tough time .. pls help

Answer 1

Notice that:

`C\subseteq B.`

Therefore:

`\begin{gathered} B\cup C=B, \\ B\cap C=C. \end{gathered}`

Now, B and C in interval notation are:

`\begin{gathered} B=\lbrack1,\infty), \\ C=(6,\infty). \end{gathered}`

Answer:

`\begin{gathered} B\cup C=\lbrack1,\infty), \\ B\cap C=(6,\infty). \end{gathered}`