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30 July, 04:12

You bought a guitar 6 years ago for $400. It's value decreases by about 13% per year. Write a formula to show the value of the guitar over those six years and determine its current value

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  1. 30 July, 04:16
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    This would be a depreciation formula

    which is value = Original price x (1-percent change) ^time

    using the information from the problem

    Value = 400 x (1-0.13) ^6

    value = 400 x 0.87^6

    value = $173.45
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