Question: Aplumber's total bill A can be calculated using the formula A=RT+M where R is his hourlyrate, T is the total labor time inhours, and M

Aplumber's total bill A can be calculated using the formula

A=RT+M

where R is his hourlyrate, T is the total labor time inhours, and M is the cost of materials. A plumber bids a particular job at $2780. If materials amount to $972, and his hourly rate is $64 perhour, how many hours should the job take for the estimate to beaccurate?

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