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A plumber charges $55 for a service call plus $35 per hour. If the plumber’s bill was $160, how many hours was he there?

A plumber charges $55 for a service call plus $35 per hour. If the plumber’s bill was $160, how many hours was he there?
asked 169k views
7 votes
A plumber charges $55 for a service call plus $35 per hour. If the plumber’s bill was $160, how many hours was he there?

asked
User Lxs
by
8.3k points

1 Answer

9 votes
y = 35x + 55
160 = 35x + 55
-55
105 = 35x
3 = x
the plumber was there for 3 hours
answered
User Bizarro
by
8.4k points
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