document.write( "Question 597183: The number of California gray whales is growing according to the formula
\n" ); document.write( "A = Pe0.015t, where t is measured in years. How long will it take the number of whales to
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Algebra.Com's Answer #378071 by stanbon(75887)\"\" \"About 
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The number of California gray whales is growing according to the formula
\n" ); document.write( "A = Pe0.015t, where t is measured in years. How long will it take the number of whales to double?
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\n" ); document.write( "2P = P*e^0.15t
\n" ); document.write( "e^0.015t = 2
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\n" ); document.write( "0.015t = ln(2)
\n" ); document.write( "t = ln(2)/0.015 = 46.21 years
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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