m9445193 m9445193

18-10-2021
Mathematics

contestada

A plumber charges a fixed cost of $30 plus $25 for each hour of service. If he charged $80, how long was the service?

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sirmordo sirmordo

18-10-2021

Answer:

2 hours

Step-by-step explanation:

$80-$30 (initial cost)

$50/$25 hr=2 hours

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