Chapter 1: Expressions, Equations, and Functions

Find each sum or difference.

$-5.6+\left(-30.7\right)$

Write an algebraic expression for each verbal expression.

Two-fifths of the square of a number $j$

The simplified value of the expression $-23.94÷\left(10.5\right)$.

Find the surface area of each solid.

One of the polygons below is chosen at random. Find each probability.

P (pentagon)

Name the set or sets of numbers to which each real number belongs.

$\frac{18}{3}$

Evaluate each expression.

$\frac{11-8}{1+7\cdot 2}$

The order of set of rational numbers $2\frac{1}{2},1\frac{7}{8},1.75,2.4$from least to greatest.

Evaluate each expression. Name the property used in each step.

$\frac{2}{9}\left[9÷\left(7-5\right)\right]$

Find the mean, median, and mode for each set of data.

{3, 7, 21, 23, 63, 27, 29, 95, 23}