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13 March, 01:55

At the beginning of 2000 Bradley's house was worth 220 thousand dollars and Spencer's house was worth 114 thousand dollars. At the beginning of 2003, Bradley's house was worth 188 thousand dollars and Spencer's house was worth 156 thousand dollars. Assume that the values of both houses vary at an exponential rate.

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  1. 13 March, 03:38
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    - Bradley has an exponential depreciation of 10.67 thousand per year.

    - Spencer had an exponential increase of 14000 per year.

    Step-by-step explanation:

    At the beginning of 2000:

    Bradley, B = 220000

    Spencer, S = 114000

    At the beginning of 2003:

    Bradley, B = 188000

    Spencer, S = 156000

    Variation for the 3 years:

    Bradley, B = 188000 - 220000

    = - 32000

    Spencer, S = 156000 - 114000

    = 42000

    For 1 year:

    Bradley, B = 32000 : 3

    ≈ An exponential depreciation of 10.67 thousand per year

    Spencer, S = 42000 : 3

    = An exponential increase of 14000 per year.
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