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12 December, 13:17

You purchase a cell phone for $125. The value of the cell phone decreases by about $20 annually. write a function that models the value of the cell phone over time. then find the value of the cell phone after 3 years.

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  1. 12 December, 13:41
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    Y=125-20x; the value of the cell phone after three years is $65.
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