\"\"\"\"

\

The inequality is \"\".

\

\"\"                 (Distributive property:\"\")

\

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

\

\"\"

\

Apply subtraction property of inequality:Subtract 4n from each side.

\
\

\"\"

\

\"\"   (Commutative property:\"\")

\

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

\

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

\

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

\

\"\"            (Add 18 to each side)

\

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

\

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

\

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

\

\"\"                             (Divide each side by 2)

\

\"\"                                   (Cancel common terms)

\

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

\

Graph the solution set on a number line

\

\"number

\

Note: A dot means that this point is included in the solution set.\"\"

\

 Check:

\

To Check, substitute a number greaterthan or equal 13.2 in \"\"

\

\"\"    (Substitute \"\") \ \

\

\"\" (Distributive property:\"\")

\

\"\"  (Multiply:\"\")

\

\"\"          (Subtract:\"\")

\

\"\"                    (Add:\"\")

\

The inequality istrue.\"\"

\

The inequality solution set is \"\".