document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=199800>Question 199800</A>: <I><SPAN STYLE=\"word-break: break-all;\"> do exponential functions only model phenomena that grow or can they also model phenomena that decay? Explain what is different in the form of the function in each case. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #150191 by </B><A HREF=/tutors/aboutme.mpl?userid=RAY100><B>RAY100(1637)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=RAY100><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=150191\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Exponential  Growth  is  expressed  as  ,,,,,y = C(1+r)^t,,,  with  (1+r) >1<BR>\n" );
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document.write( "Exponential  Decay  is  expressed  as .....y= C ( 1-r)^t,,,with 1>(r-1) >0,,,or 0<r<1\r<BR>\n" );
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document.write( "To  GROW,,  the  expanding  fact or  must  be  greater  than  1<BR>\n" );
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document.write( "To DECAY,  the  factor  must  be  less  than  1, ( but  larger  than  0)<BR>\n" );
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