document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=835403>Question 835403</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Mike needs at least a 75% average to pass his math course.  The class contains 5 exams that are equally weighted.  If he scored a 64%, 86%, 71%, and 90% on the first 4 tests, what score does he need on the final test to earn at least a 75% in the class </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #503471 by </B><A HREF=/tutors/aboutme.mpl?userid=LinnW><B>LinnW(1048)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=LinnW><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=LinnW><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=503471\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> First find the grade on the test that will produce an average<BR>\n" );
document.write( "grade of 75.<BR>\n" );
document.write( "Set x = the grade on the 5th test.\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2864+%2B+86+%2B+71+%2B+90+%2B+x%29%2F5=75 ALIGN=MIDDLE  ALT=\"%2864+%2B+86+%2B+71+%2B+90+%2B+x%29%2F5=75\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28311+%2B+x%29%2F5=75 ALIGN=MIDDLE  ALT=\"%28311+%2B+x%29%2F5=75\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "multiply each side by 5<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=311+%2B+x=75%2A5 ALIGN=MIDDLE  ALT=\"311+%2B+x=75%2A5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=311+%2B+x=375 ALIGN=MIDDLE  ALT=\"311+%2B+x=375\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "add -311 to each side<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=375-311 ALIGN=MIDDLE  ALT=\"x=375-311\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=64 ALIGN=MIDDLE  ALT=\"x=64\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "So a grade of 64 produces an average of 75<BR>\n" );
document.write( "and a grade of 64 or above will produce<BR>\n" );
document.write( "an average greater than or equal to 75 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );