$\"\"$

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The inequality is $\"\"$ .

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

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

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Apply addition property of inequality: Add 3.5 to each side.

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$\"\"$

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

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

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

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$\"\"$ (Divide each side by 1.4)

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

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$\"\"$ (Cancel common terms)

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Graph the Solution set on a number line

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$\"\"$

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(Note: Adot means that this point is included in the solution set)

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$\"\"$

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Check:

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To check,substitute 18 a number greaterthan or equal to 18 in

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$\"\"$

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$\"\"$

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

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

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

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The solution set is $\"\"$ .