document.write( "Question 635464: By measuring the decay of radioactive carbon-14, scientists can
\n" ); document.write( "estimate the age of the remains of living things. Carbon-14 decays at
\n" ); document.write( "a rate of 0.0121% per year (or retains 99.9879% of its radioactivity).
\n" ); document.write( "a. Write a rule for the function that gives the amount of a 5-mg lab
\n" ); document.write( "sample remaining t years after its mass is first measured.
\n" ); document.write( "b. Find the half-life of carbon-14.\r
\n" ); document.write( "\n" ); document.write( "Thank you so much! Also, thank you for your time in helping me! \n" ); document.write( "

Algebra.Com's Answer #400344 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi,
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document.write( "Find the half-life of carbon-14. 
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document.write( "   ln(2)/.0121 = t = 57.2849 yrs
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document.write( "the 'ln' function is on scientific calculators
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document.write( " ln(2) being a symbol for 
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document.write( "Using a caculator, this is the quickest way to do decay problems
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document.write( " enter 2, hit ln and then / .0121
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