SOLUTION: A plumber charges $55 for each hour plus a $20 surcharge. The plumber raises the charges for each hour by $5. Write an equation that represents the new cost c of a job that takes h

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Question 1156143: A plumber charges $55 for each hour plus a $20 surcharge. The plumber raises the charges for each hour by $5. Write an equation that represents the new cost c of a job that takes h hours? What will be the cost for 2 hours?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

c = 55h + 20 is the original cost equation
h = number of hours
55h = amount of money charged at $55 an hour for h hours (ignoring the $20 surcharge)
55h+20 = amount of money charged total, including the surcharge

The plumber raises the hourly rate by $5, so $55 becomes 55+5 = 60 dollars an hour.

The new equation is now c = 60h + 20

Plug in h = 2 to find the cost (c) for 2 hours worth of work.
c = 60h + 20
c = 60(2) + 20
c = 120 + 20
c = 140

The cost for 2 hours worth of work is $140