SOLUTION: Your cellphone company offers two text-messaging plans.one plan costs $.25 per text message ,plus a monthly fee of $9. The other plan costs $.40 per text message with no monthly fe

Question 793125: Your cellphone company offers two text-messaging plans.one plan costs $.25 per text message ,plus a monthly fee of $9. The other plan costs $.40 per text message with no monthly fee.
A)For how many text messages will both plans cost the same amount?
B)If you use about 80 text messages each month , which plan should you choose?

Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
0.25x+9=0.40x
9=0.40x-0.25x
9=0.15x
9/0.15=x
60=x
------------------
0.25*80+9=$29
0.40*80=$32
you decide
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