document.write( "Question 1131149: During surgery, a patient's circulatory system requires at least 50 milligrams of an anesthetic. The amount of anesthetic present t hours after 70 milligrams of anesthetic is administered is given by the following.
\n" ); document.write( "T(t) = 70(0.727)t
\n" ); document.write( "(a) How much, to the nearest milligram, of the anesthetic is present in the patient's circulatory system 20 minutes after the anesthetic is administered_______mg
\n" ); document.write( "b) How long, to the nearest minute, can the operation last if the patient does not receive additional anesthetic?_______min
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Algebra.Com's Answer #747791 by MathLover1(20850)\"\" \"About 
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During surgery, a patient's circulatory system requires at least 50 milligrams of an anesthetic. The amount of anesthetic present t hours after 70 milligrams of anesthetic is administered is given by the following.\r
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\n" ); document.write( "\n" ); document.write( "\"T%28t%29+=+70%280.727%29%5Et\"\r
\n" ); document.write( "\n" ); document.write( "(a) How much, to the nearest milligram, of the anesthetic is present in the patient's circulatory system \"t=20\" minutes after the anesthetic is administered_______mg\r
\n" ); document.write( "\n" ); document.write( "\"20\" minutes is (1/3) hour, so evaluate T for t=(1/3)\r
\n" ); document.write( "\n" ); document.write( "\"T%281%2F3%29+=+70%280.727%29%5E%281%2F3%29\"\r
\n" ); document.write( "\n" ); document.write( "\"T%281%2F3%29+=+70%2Aroot%283%2C0.727%29\"
\n" ); document.write( "\"T%281%2F3%29+=+70%2A0.899176\"\r
\n" ); document.write( "\n" ); document.write( "\"T%281%2F3%29+=+62.94232\"\r
\n" ); document.write( "\n" ); document.write( "to the nearest milligram:\r
\n" ); document.write( "\n" ); document.write( "\"T%281%2F3%29+=+63mg\"\r
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\n" ); document.write( "\n" ); document.write( "b) How long, to the nearest minute, can the operation last if the patient does not receive additional anesthetic?_______min\r
\n" ); document.write( "\n" ); document.write( "\"63+=+70%280.727%29%5Et\"\r
\n" ); document.write( "\n" ); document.write( "\"63%2F+70=%280.727%29%5Et\"\r
\n" ); document.write( "\n" ); document.write( "\"0.9=%280.727%29%5Et\"\r
\n" ); document.write( "\n" ); document.write( "\"log%280.9%29=log%28%280.727%29%5Et%29\"\r
\n" ); document.write( "\n" ); document.write( "\"log%280.9%29=tlog%280.727%29\"\r
\n" ); document.write( "\n" ); document.write( "\"t=log%280.9%29%2Flog%280.727%29\"\r
\n" ); document.write( "\n" ); document.write( "\"t=0.330461\" hours\r
\n" ); document.write( "\n" ); document.write( "\"t=0.330461hours%2A+60+%28min%2Fhour%29\"\r
\n" ); document.write( "\n" ); document.write( "\"t=19.8277min\"=> \"t=20min\"\r
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