document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=379554>Question 379554</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Not sure if this is in the right section, but hoping for some help.  I have this question on my practice sheet for a final coming up, it says...\r<BR>\n" );
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document.write( "Suppose that f(x) is exponential and that f(-3)=54 and f(2)=2/9.  Find a formula for f(x).\r<BR>\n" );
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document.write( "I don't even know what this means!!  It says it's exponential, does that mean it's an exponential function and I should assume f(x)=ab^x?  Isn't that a formula itself?  I'm not sure what to do here or how to even start on this.  Is my math teacher just wording this poorly or am I lost?  Help! :) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #269550 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=269550\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Yes, an exponential function has the form, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=ab%5Ex ALIGN=MIDDLE  ALT=\"y=ab%5Ex\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Use both points.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28-3%29=54 ALIGN=MIDDLE  ALT=\"f%28-3%29=54\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "1.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=54=ab%5E%28-3%29 ALIGN=MIDDLE  ALT=\"54=ab%5E%28-3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%282%29=2%2F9 ALIGN=MIDDLE  ALT=\"f%282%29=2%2F9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "2.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2F9=ab%5E%282%29 ALIGN=MIDDLE  ALT=\"2%2F9=ab%5E%282%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Divide eq. 2 by eq. 1 to eliminate <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a ALIGN=MIDDLE  ALT=\"a\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282%2F9%29%2F54=%28ab%5E2%29%2F%28ab%5E%28-3%29%29 ALIGN=MIDDLE  ALT=\"%282%2F9%29%2F54=%28ab%5E2%29%2F%28ab%5E%28-3%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b%5E5=1%2F243 ALIGN=MIDDLE  ALT=\"b%5E5=1%2F243\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28b=1%2F3%29 ALIGN=MIDDLE  ALT=\"highlight%28b=1%2F3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Then use either equation to solve for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a ALIGN=MIDDLE  ALT=\"a\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2F9=a%281%2F3%29%5E2 ALIGN=MIDDLE  ALT=\"2%2F9=a%281%2F3%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2F9=a%2F9 ALIGN=MIDDLE  ALT=\"2%2F9=a%2F9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28a=2%29 ALIGN=MIDDLE  ALT=\"highlight%28a=2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28y=2%281%2F3%29%5Ex%29 ALIGN=MIDDLE  ALT=\"highlight_green%28y=2%281%2F3%29%5Ex%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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