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steffanie_0831

  • 3 years ago

Help? A.1970 B.1966 C.1964 D.1975

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  1. steffanie_0831
    • 3 years ago
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    You can model the population of a certain city between the years 1955 and 2000 by the radical function |dw:1356762048525:dw|Using this model, in what year was the population of that city 275,000? (1 point)

  2. ghazi
    • 3 years ago
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    275000=5500 sqrt {x-1945}\[275000=5500 \sqrt{x-1945}\] square both sides

  3. ghazi
    • 3 years ago
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    \[\frac{ 275000 }{ 5500 }=\sqrt{x-1945}=50\]

  4. matricked
    • 3 years ago
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    here p(x)=275,000 so 275,000=5500*sqrt(x-1945) or sqrt(x-1945)=275000/55000

  5. matricked
    • 3 years ago
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    or(x-1945)=5*5 or x=1945+25=1970

  6. matricked
    • 3 years ago
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    its 1970

  7. matricked
    • 3 years ago
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    @ghazi even initially i overlooked 55000 as 5500

  8. ghazi
    • 3 years ago
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    sorry, that is where i made mistake, i thought its 5500 :)

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