An electrician charges according to the equation C=75n+60, where C is the total charge, in dollars, for a house call, and n is the time, in hours, the job takes.
Identify the slope and the C intercept and explain what they mean. [2]
What would the cost be for a 2 hour house call? [2]
A recent job cost $660. How many hours did this job take? [2]
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2) what would the cost be for a 2 hour house call?
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