## Intermediate Algebra (6th Edition)

$3$, $0$, $\sqrt 36$, $\frac{2}{5}$, $-134$
Rational numbers are any numbers that can be expressed as $\frac{a}{b}$, where $a$ and $b$ are integers and $b\ne0$. Any integer can be expressed as $\frac{a}{b}$ by putting it over a denominator of $1$.