AT&T is offering a 600-minute peak plan with free mobile-to-mobile and weekend minutes
Chapter 9, Problem 64(choose chapter or problem)
AT&T is offering a 600-minute peak plan with free mobile-to-mobile and weekend minutes at $59 per month plus $0.13 per minute for every minute over 600. The next plan up is the 800-minute plan that costs $79 per month. You think you may go over 600 minutes, but are not sure you need 800 minutes. How many minutes would you have to talk for the 800-minute plan to be the better deal?
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