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

The inequality is $\"\"$ .

Apply addition property of inequality: Add 8 to each side.

$\"\"$

$\"\"$ (Additive inverse property: $\"\"$ )

$\"\"$ (Additive identity property: $\"\"$ )

$\"\"$ (Add: $\"\"$ ) $\"\"$

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 6.9, in $\"\"$ .

$\"\"$ (Substitute f = 5)

$\"\"$ (Subtract : $\"\"$ )

The inequality is true. $\"\"$

The inequality solution set is $\"\"$ .