A cable installer charges 42.50 per hour plus a 45.00 service charge. your fathers firm hires him to hook up his company's internet service

Simple ...

you have: If this cable installer charges $42.50 per hour plus a fixed $45 service charge ... then set your equation ... using-->>

y=mx+b

How much would the cable installer charge for 5 hours?

y=42.50 (5) + 45

y=212.50+45

y=$257.50

Thus, your answer.