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Information given :
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She wants to earn more than $700.
She is paid $500 plus 5% sales.
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Define x :
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Let the amount of sales bee x:
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Construct equation :
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500 + 0.05x ≥ 700
0.05x ≥ 200 // take away 500 from both sides
x ≥ 4000 // Divide by 0.05 on both sides
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Answer: She must make at least $4000 in sales.
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