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6 August, 18:42

Multiple Choice

You can model the population of a certain city between 1945-2000 by the radical function P (x) = 55,000 sqrt x-1945. Using this model, in which year was the population of that city 165,000?

A) 1948

B) 1951

C) 1954

D) 1957,

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Answers (1)
  1. 6 August, 22:41
    0
    The answer is 1954. Letter C is correct

    Solution:

    If P (x) = 165,000

    Then

    165,000 = 55,000 (x - 1945) ^ (1/2)

    x = 1954

    to check it, substitute x

    165,000 = 55,000 (1954 - 1945) ^ (1/2)

    165,000 = 165,000
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