channarlawassociate
18.10.2021 •
Mathematics
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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Ответ:
2 hours
Step-by-step explanation:
$80-$30 (initial cost)
$50/$25 hr=2 hours
Ответ:
96 I think
I have no clue honestly I haven't done area since grade 4