SOLUTION: how do you solve 3.5^x=47.9 without using a calculator? I get really confused when it comes to the decimals..

Question 567199: how do you solve 3.5^x=47.9 without using a calculator? I get really confused when it comes to the decimals..
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
3.5^x=47.9
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You have no choice but to take the log of both sides:
x(log(3.5)) = log(47.9)
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x = log(47.9)/(log(3.5))
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x = 3.0885
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Unless you use a slide rule of log tables you cannot
get this answer without a calculator.
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Cheers,
Stan H.
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