document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=87832>Question 87832</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have a question that states:  find f(-2) for the function f(x)=2^4x-1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #63815 by </B><A HREF=/tutors/aboutme.mpl?userid=bucky><B>bucky(2189)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=bucky><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=63815\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I'm not sure whether you meant the problem to be find f(-2) given that<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%29+=+2%5E%284x-1%29 ALIGN=MIDDLE  ALT=\"f%28x%29+=+2%5E%284x-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > <=== first case<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%29+=+2%5E%284x%29+-+1 ALIGN=MIDDLE  ALT=\"f%28x%29+=+2%5E%284x%29+-+1\"   DISABLED_style= \"max-width:90%; height:auto;\" > <=== second case<BR>\n" );
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document.write( "In either case, the way you work this problem is to substitute -2 for x and calculate the<BR>\n" );
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document.write( "In the first case, substituting -2 for x results in:<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28-2%29+=+2%5E%28%284%2A%28-2%29%29-1%29+=+2%5E%28%28-8+-+1%29%29+=+2%5E%28-9%29+=+1%2F2%5E9+=+1%2F512 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "In the second case, substituting -2 for x results in:<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28-2%29+=+2%5E%284%2A%28-2%29%29+-+1+=+%282%5E-8%29+-+1+=+1%2F2%5E8+-+1+=+1%2F256+-+1+=+-255%2F256 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "[Note that in these two problems <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%5E9+=+512 ALIGN=MIDDLE  ALT=\"2%5E9+=+512\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%5E8+=+256 ALIGN=MIDDLE  ALT=\"2%5E8+=+256\"   DISABLED_style= \"max-width:90%; height:auto;\" >]<BR>\n" );
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document.write( "Hope this helps you to see your way through the problem.  Just remember that when you<BR>\n" );
document.write( "write f(-2) it means substitute -2 for the variable on the right side.  So f(5) would<BR>\n" );
document.write( "mean substitute +5 for the variable, and so forth.<BR>\n" );
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