Business Calculus
(−∞,−3)∪(−3,∞)\(\left\)(-\(\infty\),-3\(\right\))\(\cup\[\left\)(-3,\(\infty\]\right\))
(−∞,−3]\(\left\)(-\(\infty\),-3\(\right\]\rbrack\)
[3,∞)\(\left\[\lbrack\)3,\(\infty\]\right\))
(−∞,∞)\(\left\)(-\(\infty\),\(\infty\]\right\))