$\"\"$

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Jin is selling advertising space in central city magazine to local businesses.

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Jin earns $\"\"$ commission for every advertisement he sells plus a salary of $\"\"$ a week.

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If the average amount of money that a business spends on an advertisement is $\"\"$ .

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How many advertisements must he sell each week to make a salary of at least $\"\"$ that week.

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a.

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write an inequality.

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Let $\"\"$ average amount.

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The inequality is $\"\"$ .

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$\"\"$

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b.

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Solve the inequality.

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$\"\"$ (Original inequality)

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

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$\"\"$ (Subtract $\"\"$ from each side)

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$\"\"$ (Apply additive inverse property: $\"\"$ )

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

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

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$\"\"$ (Cancel common terms)

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Jin must sell at least $\"\"$ advertisements. $\"\"$

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(a)

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The inequality is $\"\"$ .

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(b)

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Jin must sell at least $\"\"$ advertisements.