document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=215557>Question 215557</A>: <I><SPAN STYLE=\"word-break: break-all;\"> After taking 4 quizzes, your average is 76 out of 100. What must your average score be on the next five quizzes to increase your average to 81? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #162875 by </B><A HREF=/tutors/aboutme.mpl?userid=drj><B>drj(1380)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=drj><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=drj><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=162875\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> After taking 4 quizzes, your average is 76 out of 100. What must your average score be on the next five quizzes to increase your average to 81?\r<BR>\n" );
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document.write( "Step 1.  Let x be the average of the next five quizzes.\r<BR>\n" );
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document.write( "Step 2.  Let 4*76 be the 4 quizzes with each quiz having a score of 76 so the average of the four quizzes is 76.\r<BR>\n" );
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document.write( "Step 3.  There will be a total of 9 quizzes.\r<BR>\n" );
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document.write( "Step 4.  The average of nine quizzes is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=81=%284%2A76%2B5x%29%2F9 ALIGN=MIDDLE  ALT=\"81=%284%2A76%2B5x%29%2F9\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  Solve for x as follow\r<BR>\n" );
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document.write( "Multiply 9 to both sides of equation to get rid of denominator\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=81=%284%2A76%2B5x%29%2F9 ALIGN=MIDDLE  ALT=\"81=%284%2A76%2B5x%29%2F9\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9%2A81=9%2A%28304%2B5x%29%2F9 ALIGN=MIDDLE  ALT=\"9%2A81=9%2A%28304%2B5x%29%2F9\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=729=304%2B5x ALIGN=MIDDLE  ALT=\"729=304%2B5x\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Subtract 304 to both sides of equation to get 5x on the right side\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=425=5x ALIGN=MIDDLE  ALT=\"425=5x\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Divide by 5 to both sides of equation to solve for x\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=85 ALIGN=MIDDLE  ALT=\"x=85\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Step 5.  ANSWER:  To get an overall average of 81, the next five quizzes must average 85.\r<BR>\n" );
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document.write( "I hope the above steps were helpful.\r<BR>\n" );
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document.write( "For FREE Step-By-Step videos in Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra and for Trigonometry visit http://www.FreedomUniversity.TV/courses/Trigonometry.\r<BR>\n" );
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document.write( "Good luck in your studies!\r<BR>\n" );
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document.write( "Respectfully,<BR>\n" );
document.write( "Dr J </SPAN>\n" );
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