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19-12-2016
Mathematics

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Write and solve a real-world problem that can be represented by 15x - 20 ≤ 130.

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19-12-2016

I have 2 options for a plumber. Option A costs $15 an hour but I have a $20 off coupon. Option B costs $130 for any amount of hours. How many hours could plumber A work for before costing more than plumber B?

The answer is
10 ≤ x

10 hours or less.

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