document.write( "Question 212343: The decay of 422 mg of an isotope is given by A(t) = 422e-0.016t, where t is time in years. Find the amount left after 17 years. Does anybody have any pointers about how to input these values on a scientific calculator? \n" ); document.write( "

Algebra.Com's Answer #160374 by Edwin McCravy(20063) $\"\"$ $\"About$

You can put this solution on YOUR website!
The decay of 422 mg of an isotope is given by $\"A%28t%29+=+422e%5E%28-0.016t%29\"$ , where t is time in years. Find the amount left after 17 years. Does anybody have any pointers about how to input these values on a scientific calculator?
\n" ); document.write( "

 \r\n" );
document.write( "On a TI-83 or 84, type this on the main screen:\r\n" );
document.write( "\r\n" );
document.write( "422e^(-0.016*17)\r\n" );
document.write( "\r\n" );
document.write( "Press ENTER\r\n" );
document.write( "\r\n" );
document.write( "and read 321.5024982 or about 321.5 mg left\r\n" );
document.write( "\r\n" );
document.write( "Edwin

\n" ); document.write( "

\n" );