document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=994020>Question 994020</A>: <I><SPAN STYLE=\"word-break: break-all;\"> from 1990 to 1998 the manufacturer's shipments for audio cassettes A (in millions) and compact discs C (in millions) can be modeled by the equations:<BR>\n" );
document.write( "A=-31.8t+322<BR>\n" );
document.write( "c=428.8t+110<BR>\n" );
document.write( "where t is the number of years since 1990. During what year did the number of compact discs shipped surpass the number of audio cassettes shipped?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #613232 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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/cgi-bin/show-face.mpl?user=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=613232\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The point where the two graphs meet is the year, if one looks at t.<BR>\n" );
document.write( "-31.8t +322=428.8t + 110<BR>\n" );
document.write( "460.6 t= 212<BR>\n" );
document.write( "t=0.460.  This would be in mid-1990.  I wonder if the numbers were copied correctly, but with those equations, that is the value.\r<BR>\n" );
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