document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=546758>Question 546758</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If Joe gets 97 on his next math test, his average will be 90. If he gets 73, his average will be 87. How many tests has Joe already taken?\r<BR>\n" );
document.write( "\n" );
document.write( "Formula: T+97 = 90, T+73 = 87<BR>\n" );
document.write( "         n+1        n+1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #356850 by </B><A HREF=/tutors/aboutme.mpl?userid=JBarnum><B>JBarnum(2146)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=JBarnum><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=JBarnum><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=356850\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28T%2B97%29%2F%28n%2B1%29%29=90 ALIGN=MIDDLE  ALT=\"%28%28T%2B97%29%2F%28n%2B1%29%29=90\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "solve above for T<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28T%2B97%29=90%28n%2B1%29 ALIGN=MIDDLE  ALT=\"%28T%2B97%29=90%28n%2B1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=T=90n%2B90-97 ALIGN=MIDDLE  ALT=\"T=90n%2B90-97\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=T=90n-7 ALIGN=MIDDLE  ALT=\"T=90n-7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "use substitution below<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28T%2B73%29%2F%28n%2B1%29%29=87 ALIGN=MIDDLE  ALT=\"%28%28T%2B73%29%2F%28n%2B1%29%29=87\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28%2890n-7%29%2B73%29%2F%28n%2B1%29%29=87 ALIGN=MIDDLE  ALT=\"%28%28%2890n-7%29%2B73%29%2F%28n%2B1%29%29=87\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2890n-7%2B73%29=87n%2B87 ALIGN=MIDDLE  ALT=\"%2890n-7%2B73%29=87n%2B87\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=90n%2B66=87n%2B87 ALIGN=MIDDLE  ALT=\"90n%2B66=87n%2B87\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3n%2B66=87 ALIGN=MIDDLE  ALT=\"3n%2B66=87\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3n=21 ALIGN=MIDDLE  ALT=\"3n=21\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n=7 ALIGN=MIDDLE  ALT=\"n=7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "use substitution below<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=T=90n-7 ALIGN=MIDDLE  ALT=\"T=90n-7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=T=90%287%29-7 ALIGN=MIDDLE  ALT=\"T=90%287%29-7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=T=623 ALIGN=MIDDLE  ALT=\"T=623\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "check<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28623%2B97%29%2F%288%29=90 ALIGN=MIDDLE  ALT=\"%28623%2B97%29%2F%288%29=90\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=90=90 ALIGN=MIDDLE  ALT=\"90=90\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "correct<BR>\n" );
document.write( "check<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28623%2B73%29%2F%288%29=87 ALIGN=MIDDLE  ALT=\"%28623%2B73%29%2F%288%29=87\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=87=87 ALIGN=MIDDLE  ALT=\"87=87\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "correct<BR>\n" );
document.write( "he has already taken 7 tests<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );