document.write( "Question 860765: If 10g of a radioactive substance are present initially and 3 years later only 5g remain, how much will be present after 7 years? \n" ); document.write( "
Algebra.Com's Answer #803415 by CubeyThePenguin(3113)\"\" \"About 
You can put this solution on YOUR website!
10(x)^3 = 5
\n" ); document.write( "x^3 = 1/2
\n" ); document.write( "x = 0.793\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "10(0.793)^7 = 1.984 g
\n" ); document.write( "
\n" );