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7 March, 12:11

Jacob is choosing a cell phone plan. If five messages cost $1 and 20 messages cost $4, what is the rate of change of the cost per message?

-$2 per message

$2 per message

-$0.20 per message

$0.20 per message

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Answers (1)
  1. 7 March, 15:07
    0
    The answer is $.20 per message
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