$\"\"$ $\"\"$

The inequality is $\"\"$ .

Apply multiplication property of inequality: Multiply each side by 3.

$\"\"$

$\"\"$ (Cancel common terms)

$\"\"$ (Multiply: $\"\"$ )

$\"\"$ (Multiply each side by negative one and flip the symbol)

$\"\"$ (Product of two same signs is positive sign) $\"\"$

Graph the solution set on a number line. $\"number$

Note: A circle means that this point is not included in the solution set. $\"\"$

Check:

To check, substitute a number less than 15 in inequality $\"\"$ .

$\"\"$ (Substitute $\"\"$ )

$\"\"$ (Divide: $\"\"$ )

The inequality is true. $\"\"$

The inequality solution is $\"\"$ .