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math-functions

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A car purchased for $11900 has a resale value of $2000 after 10 years. Assuming its resale value decreased linearly over these years, what was the resale value of the car after 3 years?

  • math-functions - ,

    two given ordered pairs:
    (0,11900)
    (10,2000)

    m = slope = (2000-11900)/ (10 - 0) =-990 per year
    so
    11900 - 3(990) = 8930

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