# Appendix A - Basic Algebra Review - A Exercises - Page A-15: 110

$(-\infty, +\infty)$

#### Work Step by Step

The interval covers the entire number line so it goes to negative infinity on the left and to positive infinity to the right. Since infinity is involved, parentheses will be used. Therefore, the interval notation for the given interval is $(-\infty, +\infty)$.

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