SOLUTION: Paul's Plumbing charges $35 for any service call plus an additional $40 an hour for labor. A service call from Robert's Rapid Repair Plumbing costs $45 plus and additional $40 and

Question 150331: Paul's Plumbing charges $35 for any service call plus an additional $40 an hour for labor. A service call from Robert's Rapid Repair Plumbing costs $45 plus and additional $40 and hour for labor. When is the total price for a service the same for both companies? when is it better to use Paul's Plumbing? explain your answer in terms of slopes and y-intercepts.
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Paul's Plumbing charges $35 for any service call plus an additional $40 an hour for labor. A service call from Robert's Rapid Repair Plumbing costs $45 plus and additional $40 and hour for labor. When is the total price for a service the same for both companies? when is it better to use Paul's Plumbing? explain your answer in terms of slopes and y-intercepts.
:
Since they charge the same for labor ($40), Paul's is always $10 cheaper
:
In terms of graphs, they have the same slope (40x) so the lines are parallel and never intersect. the y intercepts will be different, 35 & 45
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