SOLUTION: A cell phone carrier charges a fixed monthly fee plus a constant rate for each minute used. Part 1. In January, the total cost for 175 minutes was $ 50.5 while in Febru

Algebra ->  Graphs -> SOLUTION: A cell phone carrier charges a fixed monthly fee plus a constant rate for each minute used. Part 1. In January, the total cost for 175 minutes was $ 50.5 while in Febru      Log On


   

Question 1142836: A cell phone carrier charges a fixed monthly fee plus a constant rate for each minute used.
Part 1. In January, the total cost for
175
minutes was
$
50.5
while in February, the total cost for
200
minutes was
$
52
. The constant charge for each minute used is:
0.07
0.08
0.06

Part 2. The fixed monthly fee charged by the carrier is;
Found 2 solutions by solver91311, greenestamps:
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Let represent the fixed monthly fee and let represent the per minute charge.





Solve the 2X2 system for and


John

My calculator said it, I believe it, that settles it

Answer by greenestamps(13200) About Me  (Show Source):
You can put this solution on YOUR website!


The additional 25 minutes cost an additional $1.50. Use that to answer part 1.

Use the answer from part 1 to find the cost of the 200 minutes in February. Subtract that from the total cost for February to find the amount of the fixed monthly fee.