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Kieran subscribes to a text messaging service on his cell phone. His monthly bill for the service is given by the equation b = 0.25t, where b is the bill amount and t is the number of texts. The constant of proportionality in terms of cost per text is . NextReset

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b=1.25 so i think im not so good with this but i try if its wrong nvr listen  to me
User Stephen ODonnell
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