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21 February, 20:57

The floor of a canyon has an elevation of - 14.5feet. Erosion causes the elevation to change by - 1.5 feet per year. How many years will it take for the canyon floor to have an elevation of - 31

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  1. 21 February, 23:51
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    11 years

    work:

    -31-14.5=-16.5

    16.5/1.5 = 11

    11 is the answer
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