jaeden15 jaeden15
  • 26-01-2021
  • Mathematics
contestada

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?

Respuesta :

erinblackk
erinblackk erinblackk
  • 26-01-2021
y = 35x + 55
160 = 35x + 55
-55
105 = 35x
3 = x
the plumber was there for 3 hours
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