91Ó°ÊÓ

Name the reciprocal of the following number.

$\frac{1}{22}$

Name the reciprocal of each number.

$−2\frac{3}{7}$

Find each product or quotient.

$\frac{6}{25}÷\left(−\frac{3}{5}\right)$

Write an algebraic expression for each verbal expression.

18 decreased by 3 times $d$

CARD GAMES Juanita told her dad that she won 80% of the card games she played yesterday. If she won 4 games, how many games did she play?

Evaluate each expression.

$108÷\left[3\left(9+3^2\right)\right]$

Identify the hypothesis and conclusion of each statement.

Then write each statement in if-then form.

Science teachers like to conduct experiments.

Example 3 Determine whether each relation is a function.

$\left[\right(5,−7),(6,−7),(−8,−1),(0,−1\left)\right\}$

Simplify each square root.

$\sqrt{49}$

The simplified form of $-32.4+\left(-4.5\right)$.