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Math College Algebra?

Science & Mathematics by Anonymous 2018-05-25 13:03:41

Social Science

Math College Algebra?

5 answers

The formula A=298e^0.033t models the population of a particular city, in thousands, t years after 2011. When will the population of the city reach 375 thousand? A. 2020 B. 2017 C. 2019 D. 2018

  • Anonymous

    Let A = 375 in the equation and solve for t.

  • Anonymous

    A(t) = 298e^(0.033)t. t = ln[A/298]/(0.033). Now, for A = 375, t = [1/(0.033)]ln[375/298] = 6.964622408, at the tail end of 2017. Choice B. pertains.

  • Anonymous

    A=298e^(0.033t) => 375=298e^(0.033t) => t=6.9646.. => Ans. 2017 (B) because 6.9646...years 6<6.9646...<7.

  • Anonymous

    The formula A = 298e^0.033t models the population of a particular city, in thousands, t years after 2011. When will the population of the city reach 375 thousand? 375000 = 298 e^(0.033 t) t ≈ 216.291 B. 2017

  • Anonymous

    I assume you mean A = 298e^(0.033t). The parentheses matter. 298e^(0.033t) = 375 e^(0.033t) = 375/298 0.033t = ln(375/298) t = (1000/33)ln(375/298) ≅ 6.96 years 6.96 years after 2011 occurs during 2018.

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