FIFTY POINTS! Two different telephone carriers offer the following plans that a person is considering.
Company A: charges a
$25
monthly fee and
$0.10
/min for calls
Company B: charges a
$10
monthly fee and
$0.20
/min for calls
Find the model of the total cost for both companies for one month, using
m
for the minutes.
Company A:
A
=

Company B:
B
=

How many minutes of calling in one month would make the two plans equal?
minutes

If the person makes a monthly average of
200 minutes of calls, which plan should the person choose?
Company A
Company B