SOLUTION: Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $20 one-time activation fee and charges 13 cents a minute. The secon

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $20 one-time activation fee and charges 13 cents a minute. The secon      Log On


   

Question 262776: Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $20 one-time activation fee and charges 13 cents a minute. The second plan has no activation fee and charges 17 cents a minute. After how many minutes of long distance calls will the costs of the two plans be equal?
Found 2 solutions by pinklipgloss2007, richwmiller:
Answer by pinklipgloss2007(6) About Me  (Show Source):
You can put this solution on YOUR website!
Set the two equations equal to each other.
20+0.13m=0.17m
Subtract 0.13m from each side.
You get 20=0.04m
Divide both sides by 0.04m
500=m
So after 500 minutes, the phone plans should be equal.

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
Not after 500 minutes the phone plans are equal but AT 500 minutes the phone plans are equal
fewer than 500 minutes the second plan is cheaper
after 500 minutes the first plan is cheaper