Teddy signs up for a phone plan at Verizon. His phone plan has fixed service fees of 10$ every month, a rate of $0.05/minute for calling, and $0.1/text message. This month, he has sent a total of 50 text messages. If his total phone bill for this month is 20$, how many minutes of calling did he use?
Teddy signs up for a phone plan at Verizon. His phone plan has fixed service fees of 10$ every month, a rate of $0.05/minute for calling, and $0.1/text message. This month, he has sent a total of 50 text messages. If his total phone bill for this month is 20$, how many minutes of calling did he use?
Chapter12: Sequences, Series And Binomial Theorem
Section12.3: Geometric Sequences And Series
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11. Teddy signs up for a phone plan at Verizon. His phone plan has fixed service fees of 10$ every month, a rate of $0.05/minute for calling, and $0.1/text message. This month, he has sent a total of 50 text messages. If his total phone bill for this month is 20$, how many minutes of calling did he use?
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