document.write( "Question 1130956: The drug Valium is eliminated from the bloodstream exponentially with a half-life of 36 hours. Suppose that a patient receives an initial dose of 220 milligrams of Valium at midnight.
\n" ); document.write( "a. How much Valium is in the patient’s blood at noon on the first day?
\n" ); document.write( "b. Estimate when the Valium concentration will reach 50% of its initial level?
\n" ); document.write( "

Algebra.Com's Answer #747556 by josgarithmetic(39621)\"\" \"About 
You can put this solution on YOUR website!
You can answer part b without any calculation because you already know the half-life; so 36 hours to go grom 100% to 50%.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"v=220%2A%281%2F2%29%5E%28t%2F36%29\"------when t is 36, that is one half-life and v becomes 110.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Part (a)
\n" ); document.write( "That is 12 hours, for t=12.
\n" ); document.write( "Evaluate v.
\n" ); document.write( "
\n" );