California Pre-Algebra, 2008

 PAGE: 146 SET: Exercises PROBLEM: 3

The inequality is

Apply multiplication property of inequality: .

(Multiply each side by 2)

(Cancel common terms)

(Multiply: )

Multiply each side by negative one and flip the symbol

(Product of two same signs is positive)

The solution set is .

Graph the solution set on a number line.

Note: The point indicated with open circle is not included in the solution set.

Check:

To check, substitute a number greater than 16  in the inequality .

(Substitute )

(Divide: )

The inequality is true.

The graph of is

The inequality solution set is .

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