SOLUTION: A plumber charges $80 for a service call plus $30 per hour. a. Find a linear function that represents the total daily charges C, in dollars, as a function of the time t, in hours

Algebra ->  Average -> SOLUTION: A plumber charges $80 for a service call plus $30 per hour. a. Find a linear function that represents the total daily charges C, in dollars, as a function of the time t, in hours      Log On


   

Question 1113839: A plumber charges $80 for a service call plus $30 per hour.
a. Find a linear function that represents the total daily charges C, in dollars, as a function of the time t, in hours, spent at a given location.
b. If the total charge was $140, how many hours did he work?

Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
y, the total chareges
x, how many hours
y=30x%2B80--------the description
or as question asks,
C=30t%2B80.
... you find your other answers from this.