T‐Talk cell phone company charges a flat rate of $15 per month plus $0.10 per minute in calls. Mobile Serve does not charge a flat rate, but charges $.30 per minute in calls. How many minutes would you have to talk in order for them to charge the same? How much would it cost?

T‐Talk cell phone company charges a flat rate of $15 per month plus $0.10 per minute in calls. Mobile Serve does not charge a flat rate, but charges $.30 per minute in calls. How many minutes would you have to talk in order for them to charge the same? How much would it cost?

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Question

T‐Talk cell phone company charges a flat rate of $15 per month plus $0.10 per minute in calls. Mobile
Serve does not charge a flat rate, but charges $.30 per minute in calls. How many minutes would you have
to talk in order for them to charge the same? How much would it cost?

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