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For each job, a plumbing services company charges a one-time service fee of $50 and a $125 per hour rate for labor. Let n be the total amount the company charges in dollars, for a job that takes b hours to complete. Write an equation that represents the relationship between n and b

Answer :

n=125b+50
you would already be charged $50 that is why we add 50, and the rate is $125.
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n=125b+50 where n= the total amount the company charges in dollars

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