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March 29, 2017

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An innovative rural public health program is reducing infant mortality in a certain West African country. Pretend the program in Senegal has been reducing infant mortality at a rate 8.1 % per year. How long will it take for infant mortality to be reduced by 30 %?

  • math - ,

    100 - 8.1 = 91.9
    so each year number = .919 of year before
    how many years before amount = 0.7 * original?

    .7 = .919^n
    log .7 = n log .919
    -.1549 = n (-.03668)
    n = 4.22 years

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