document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1007690>Question 1007690</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Students in a fifth-grade class were given an exam. During the next 2 years, the same students were retested several times. The average scores was given by the model f (t)=90-4log(t+1), 0 <=t<=24<BR>\n" );
document.write( "Where t is the time in months.<BR>\n" );
document.write( "A) what is the average score on the original exam?<BR>\n" );
document.write( "B) what was the average score after 6 months?<BR>\n" );
document.write( "C what was the average score after 18 months?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #660117 by </B><A HREF=/tutors/aboutme.mpl?userid=MaxWong><B>MaxWong(38)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MaxWong><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=660117\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A) Average score = f(0) = 90 - 4 log(0+1) = 90 - 4(0) = 90<BR>\n" );
document.write( "B) Average score = f(6) = 90 - 4 log(6+1) = 90 - 4log7 which is about 86.6<BR>\n" );
document.write( "C) Average score = f(18) = 90 - 4 log(18+1) = 90 - 4log19 which is about 84.9 </SPAN>\n" );
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