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anonymous

  • 5 years ago

I cant seem to figure out these questions this is the equation for these questions. fx=-.68(x-26.56)^2+116.13 Estimate the number of women per 1000 who give birth at age 24 according to your model. At what age do the most women give birth (to the nearest tenths) per 1000? How many per 1000? (If you chose a, h, and k so that your model “goes through” all the TI-plot-boxes of your points, it wasn’t likely that your vertex happened at , but it will be close.)

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  1. anonymous
    • 5 years ago
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    simple

  2. anonymous
    • 5 years ago
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    first part, sub x= 24 into the formula and use your calculator I assume x represents age

  3. anonymous
    • 5 years ago
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    now , the second and thrid parts are based on parabola knowledge

  4. anonymous
    • 5 years ago
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    ok

  5. anonymous
    • 5 years ago
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    it is a concave down parabola , because it has a negative x^2 coefficent

  6. anonymous
    • 5 years ago
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    so , the function will take its maxium value when the first term ( the negative term ) is zero

  7. anonymous
    • 5 years ago
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    this occurs when x=26.56 , so this is the answer to the second, when do most give birth

  8. anonymous
    • 5 years ago
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    when the negative term is zero all that is left is 116.13 , the constant term, this is the answer to the third part

  9. anonymous
    • 5 years ago
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    for the first question I put the 24 in the equation and I graphed it on my calculator and its just a straight line

  10. anonymous
    • 5 years ago
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    a flat line I hope, a horizontal line

  11. anonymous
    • 5 years ago
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    yes

  12. anonymous
    • 5 years ago
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    well.. thats the answer ? a flat line is a just a number, a constant value

  13. anonymous
    • 5 years ago
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    Thank you

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spraguer (Moderator)
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