document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=692850>Question 692850</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A test has 30 questions, you earn 9 points for every correct answer  but lose 5 points for every wrong answer. The final test score was 18, how many questions were answered correctly? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #427112 by </B><A HREF=/tutors/aboutme.mpl?userid=Stitch><B>Stitch(470)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Stitch><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=427112\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Set up:<BR>\n" );
document.write( "A = # of correct answers<BR>\n" );
document.write( "B = # of wrong answers<BR>\n" );
document.write( "Equation 1: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=18+=+9A+-+5B ALIGN=MIDDLE  ALT=\"18+=+9A+-+5B\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Equation 2: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=30+=+A+%2B+B ALIGN=MIDDLE  ALT=\"30+=+A+%2B+B\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-------------------------------<BR>\n" );
document.write( "Solve equation 2 for one of the variables. I soled for A<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A+=+30+-+B ALIGN=MIDDLE  ALT=\"A+=+30+-+B\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now plug (30 - B) into equation 1 for A<BR>\n" );
document.write( "Equation 1: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=18+=+9A+-+5B ALIGN=MIDDLE  ALT=\"18+=+9A+-+5B\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=18+=+9%2A%2830+-+B%29+-+5B ALIGN=MIDDLE  ALT=\"18+=+9%2A%2830+-+B%29+-+5B\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Simplify<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=18+=+270+-+9B+-+5B ALIGN=MIDDLE  ALT=\"18+=+270+-+9B+-+5B\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Combine like terms<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=18+=+270+-+14B ALIGN=MIDDLE  ALT=\"18+=+270+-+14B\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Subtract 270 from both sides<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-252+=+-14B ALIGN=MIDDLE  ALT=\"-252+=+-14B\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Divide both sides by -14<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%2818+=+B%29 ALIGN=MIDDLE  ALT=\"highlight%2818+=+B%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now plug 18 into equation 2 for B<BR>\n" );
document.write( "Equation 2: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=30+=+A+%2B+B ALIGN=MIDDLE  ALT=\"30+=+A+%2B+B\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=30+=+A+%2B+%2818%29 ALIGN=MIDDLE  ALT=\"30+=+A+%2B+%2818%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Subtract 18 from both sides<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%2812+=+A%29 ALIGN=MIDDLE  ALT=\"highlight_green%2812+=+A%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );