Introductory Algebra for College Students (7th Edition)

$-7, -\frac{4}{5}, 0, 0.025, \sqrt4, \frac{22}{7}$
RECALL: A rational number is a number that can be expressed as $\frac{p}{q}$ where $p$ and $q$ are integers and $q\ne0$. Note that: $7=\frac{14}{2}$ $0=\frac{0}{3}$ $0.025=\frac{25}{1000}$ $\sqrt{4}=2 = \frac{6}{3}$ $\sqrt3$ and $\pi$ are not rational numbers since they cannot be expressed as a quotient of two integers. Thus, the rational numbers in the given set are: $-7, -\frac{4}{5}, 0, 0.025, \sqrt4, \frac{22}{7}$