document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=867580>Question 867580</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am in college algebra and here is the question I am stuck on, I know when I plug the equation in my calculator for part a) I get 68 but I don't know how to actually solve the problem. Can you please help explain how to solve this problem. <BR>\n" );
document.write( "Students in an English class took a final exam. They took equivalent forms of the exam at monthly intervals thereafter. The average score S(t), in percent, after t months was found to be given by<BR>\n" );
document.write( "S(t) = 68 &#8722; 20 log (t + 1), t &#8805; 0.<BR>\n" );
document.write( "a) What was the average score when they initially took the test, t = 0?<BR>\n" );
document.write( "Answer:<BR>\n" );
document.write( "Show your work in this space:<BR>\n" );
document.write( "b) What was the average score after 14 months?<BR>\n" );
document.write( "Answer: </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #523089 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39618)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=523089\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You simply substitute the given value for t and compute.  Nothing more to know.  You could use the caclulator for the logarithm value.  \r<BR>\n" );
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document.write( "Really, just do the substitution and go from there.<BR>\n" );
document.write( "(a)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=S%280%29=68-20%2Alog%28%280%2B1%29%29 ALIGN=MIDDLE  ALT=\"S%280%29=68-20%2Alog%28%280%2B1%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(b)<BR>\n" );
document.write( "Now you use t=14. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );