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

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The inequality is $\"\"$ .

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Apply subtraction property of inequality: Subtract 20 from each side.

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$\"\"$ \ \

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

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

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

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Graph the solution set on a number line.

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$\"number$

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

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Check:

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To check, substitute a number greater than $\"\"$ in $\"\"$ .

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

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$\"\"$ (Product of two different signs is negative)

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

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The inequality is true. $\"\"$

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The inequality solution is $\"\"$ .