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anonymous

  • 5 years ago

The cumulitive number of car accidents from 2000 to 2010 can be modeled by the quadratic expression, C=-29x^2+870x+11629, where x=1 corresponds to 2000, x=2 corresponds to 2001, and so on until x=11corresponds to 2010. (a)Find the number of cumulative car accidents in 2003 Use a table of values to estimate the year in which the cumulative number of car accidents reached 16700. The number of car accidents reached 16700 in about which year?

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  1. anonymous
    • 5 years ago
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    plug in x=4 for 2003

  2. anonymous
    • 5 years ago
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    do you have a graphing calculator

  3. anonymous
    • 5 years ago
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    no

  4. anonymous
    • 5 years ago
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    hold on a sec

  5. anonymous
    • 5 years ago
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    thank you been stuck on this one

  6. amistre64
    • 5 years ago
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    http://www.wolframalpha.com/input/

  7. anonymous
    • 5 years ago
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  8. anonymous
    • 5 years ago
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  9. anonymous
    • 5 years ago
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    do you understand how to look at the years for the output

  10. anonymous
    • 5 years ago
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    thx

  11. anonymous
    • 5 years ago
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    so did you get 14,645 for 2003 (x=4) and it will reach around 16,600 when x=8, year 2007

  12. anonymous
    • 5 years ago
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    you're welcome...medal please ; )

  13. anonymous
    • 5 years ago
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    you can just substitute values for x when doing it by hand

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