## Thinking Mathematically (6th Edition)

$-7, -\frac{4}{5}, 0, 0.25, \sqrt{4}, \frac{22}{7}$
RECALL: Rational numbers are numbers that can be expressed as a quotient of two integers. Note that: $0.25 = \frac{1}{4}$ $0=\frac{0}{1}$ $\sqrt4 = 2$ Thus, the rational numbers in the given set are: $-7, -\frac{4}{5}, 0, 0.25, \sqrt{4}, \frac{22}{7}$