SOLUTION: Robin decided to change her phone plan. The plan she uses has a $14.00 monthly fee and a 7-cents-per-minute charge for long distance calls. If her bill last month was $22.40, how

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Robin decided to change her phone plan. The plan she uses has a $14.00 monthly fee and a 7-cents-per-minute charge for long distance calls. If her bill last month was $22.40, how      Log On


   

Question 1193199: Robin decided to change her phone plan.
The plan she uses has a $14.00 monthly fee and a 7-cents-per-minute charge for long distance calls.
If her bill last month was $22.40, how many minutes of long distance did she use?
Answer by josgarithmetic(39625) About Me  (Show Source):
You can put this solution on YOUR website!
for x number of long distance minutes, monthly bill is 14%2B0.07x dollars.

Given that a bill was 22.4 dollars, then 0.07x%2B14.00=22.4; and just solve for x.