SOLUTION: Youre a plumber and youll charge a certain amount just for showing up at a job and youll also charge a certain rate per gour of work ( billed in half hour increments ) how do I fin

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Youre a plumber and youll charge a certain amount just for showing up at a job and youll also charge a certain rate per gour of work ( billed in half hour increments ) how do I fin      Log On


   

Question 1106747: Youre a plumber and youll charge a certain amount just for showing up at a job and youll also charge a certain rate per gour of work ( billed in half hour increments ) how do I find the charge for you to just show up at a job and how do I find what the per hour charge is
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
Note per hour is per two half-hours.

y=mx%2Bb, what you charge, y.

If r is rate per half-hour, then 2r is rate per 1 hour; and this means, m=2r.

The quantity to charge just for show up by itself is b.

Your description gave no values;
y=%282r%29x%2Bb for x number of HOURS, and rate per HOUR of 2r.