Mathematics, 05.05.2020 19:00, garyperry

10. A plumber charges a service call fee of $50, in addition to $90 per hour for plumbing repairs.
Determine the number of hours for which the average hourly cost of plumbing repairs is less
than $94.

Answers: 3

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10. A plumber charges a service call fee of $50, in addition to $90 per hour for plumbing repairs.