I worked out the rest of the questions, but I am stuck on what to do at the end.
The problem reads:
Julie needs to hire a plumber. She is told that the cost of hiring the plumber, C , is a function of time spent on the job, t , in hours. The plumber charges a one time fee of $60 and an hourly rate of $50.
The first question said "Determine a function which describes the total cost of hiring the plumber as a function of time"
and I put "C=60 + 50X"
So, the question that I am stuck on says
Find the Value for C(0).
...I did this
C(0) = 60 + 50x
0 = 60 + 50x
-60 = 50x
-6/5 = X
...Is this right? I ... have no idea what I am s'posed to plug 0 into.
I also tried
C(0) = 60 + 50(0)
...The other questions are like
question2) If plumber took 2 hours, how much did he make?
What if Julie paid him 210$?