Business Calculus
(−∞,−3)∪(−3,∞)\left(-\infty,-3\right)\cup\left(-3,\infty\right)
(−∞,−3]\left(-\infty,-3\right\rbrack
[3,∞)\left\lbrack3,\infty\right)
(−∞,∞)\left(-\infty,\infty\right)