Chapter A.9, Problem 90AYU

To determine

To solve: Each inequality. Express your answer using set notation or interval notation. Graph the solution set.

Answer to Problem 90AYU

$\left\{x|- 4 < x < 4\right\}$ or $\left(- 4, 4\right)$

Explanation of Solution

$\left|3x\right| < 12$

$- 12 < 3x < 12$

Divide by 3

$- 4 < x < 4$

The solution set is $\left\{x|- 4 < x < 4\right\}$ or using interval notation, all numbers in the interval $\left(- 4, 4\right)$.