SOLUTION: The function f(x) = 34.1 lnx +117.7 models the number of U.S. users, f(x), in millions, x years after 1999. By which year will there will be 250 million internet users in the Unit

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: The function f(x) = 34.1 lnx +117.7 models the number of U.S. users, f(x), in millions, x years after 1999. By which year will there will be 250 million internet users in the Unit      Log On


   

Question 1029820: The function f(x) = 34.1 lnx +117.7 models the number of U.S. users, f(x), in millions, x years after 1999. By which year will there will be 250 million internet users in the United States?
Answer by stanbon(75887) About Me  (Show Source):
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The function f(x) = 34.1 lnx +117.7 models the number of U.S. users, f(x), in millions, x years after 1999. By which year will there will be 250 million internet users in the United States?
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34.1*ln(x) + 117.7 = 250
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34.1*ln(x) = 132.3
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ln(x) = 3.88
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x = e^3.88 = 48.42
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Ans: 1999+ 48.42 = in the year 2048
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Cheers,
Stan H.