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A cell phone plan charges a $40 base fee. If the total cost of talking 20 minutes is $41, what is the rate of change of the cost per minute talked?
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A cell phone plan charges a $40 base fee. If the total cost of talking 20 minutes is $41, what is the rate of change of the cost per minute talked?

User LostMohican
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1 Answer

3 votes
2.05
Just divide 41 from 20
User Stas Boyarincev
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