Answer (first one):
[tex]{x|-2\leq x\leq 8}[/tex]
Step-by-step explanation:
think of f(x) as y.
[tex]y>-2[/tex]
Now find the parts on the x axis that correspond with parts on the y value that are greater than -2.
[tex]x\geq -2 \\x \leq 8[/tex]
This would be all of the numbers between -2 and 8 (inclusive).
The reason it is inclusive is because the arrow ends are shaded in.
