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13-10-2022
Mathematics

Answered

A plumber charges a flat fee of $75 to visit a home and examine a clogged drain. The plumber charges an additional $25 per hour spent fixing the drain. The
total cost, C (in dollars), for fixing a drain that takes / hours is given by the following.

C=75+25h

Answer the following questions.
(a) If the plumber charged a total of $400, how many hours did she spend
fixing the drain?

(b) What is the total cost for fixing a drain that takes 7 hours?

Answer :

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