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  3. a plumber charges a flat fee of $75 to make a hous

A plumber charges a flat fee of $75 to make a house call to a...

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Algebra

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A plumber charges a flat fee of $75 to make a house call to a customer. He also charges $50 per hour for labor plus the cost of parts. If parts cost $100 and the plumber's bill totals $212.50, how many hours did the plumber charge for labor? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer.0.5 hr0.75 hr1 hr1.5 hr

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