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A plumber charges $75 for a house call plus $45 per hour. How many hours did the plumber work if he charged $210?

A plumber charges $75 for a house call plus $45 per hour. How many hours did the plumber work if he charged $210?
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5 votes
A plumber charges $75 for a house call plus $45

per hour. How many hours did the plumber work if he
charged $210?

User Pixelbadger
by
9.1k points

1 Answer

5 votes
210=45x+75
-75. -75

135=45x
/45. /45
3=x
The plumber worked 3 hours
User Rob Davies
by
7.6k points
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