Let's assume that the plumber worked for x hours on the house call.
The equation that can be solved to find the number of hours the plumber worked on the house call is:
50 + 70x = 435
A plumber charges $50 for every house call and an additional $70 for each hour of work. For one house call yesterday, the plumber earned $435.
Which equation can be solved to find the number of hours the plumber worked on the house call?
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