document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=248007>Question 248007</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Working on this problem and don't know how to approach it -\r<BR>\n" );
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document.write( "Use the given conditions and the table below to find C, a, and f(x) = Ca^x<BR>\n" );
document.write( "Given: f(1) = 18 and f(2) = 9\r<BR>\n" );
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document.write( " x | -1 |  0 |  1 |  2<BR>\n" );
document.write( "---+----+----+----+----<BR>\n" );
document.write( " y |    |    |    |  \r<BR>\n" );
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document.write( "Plugging in the givens I get this -\r<BR>\n" );
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document.write( " x | -1 |  0 |  1 |  2<BR>\n" );
document.write( "---+----+----+----+----<BR>\n" );
document.write( " y |    |    | 18 |  9\r<BR>\n" );
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document.write( "but don't know where to go from there.\r<BR>\n" );
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document.write( "Thanks for your help - Ryan\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #180841 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=180841\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%29+=+Ca%5Ex ALIGN=MIDDLE  ALT=\"f%28x%29+=+Ca%5Ex\"   DISABLED_style= \"max-width:90%; height:auto;\" > Start with the given equation.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=18+=+Ca%5E1 ALIGN=MIDDLE  ALT=\"18+=+Ca%5E1\"   DISABLED_style= \"max-width:90%; height:auto;\" > Plug in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%29=18 ALIGN=MIDDLE  ALT=\"f%28x%29=18\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=1 ALIGN=MIDDLE  ALT=\"x=1\"   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=18+=+Ca ALIGN=MIDDLE  ALT=\"18+=+Ca\"   DISABLED_style= \"max-width:90%; height:auto;\" > Simplify\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=18%2Fa+=+C ALIGN=MIDDLE  ALT=\"18%2Fa+=+C\"   DISABLED_style= \"max-width:90%; height:auto;\" > Divide both sides by 18.\r<BR>\n" );
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document.write( "So <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C=18%2Fa ALIGN=MIDDLE  ALT=\"C=18%2Fa\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "---------------------------\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%29+=+Ca%5Ex ALIGN=MIDDLE  ALT=\"f%28x%29+=+Ca%5Ex\"   DISABLED_style= \"max-width:90%; height:auto;\" > Go back to the given equation.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9+=+Ca%5E2 ALIGN=MIDDLE  ALT=\"9+=+Ca%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > Plug in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%29=9 ALIGN=MIDDLE  ALT=\"f%28x%29=9\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=2 ALIGN=MIDDLE  ALT=\"x=2\"   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+=+%2818%2Fa%29a%5E2 ALIGN=MIDDLE  ALT=\"9+=+%2818%2Fa%29a%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > Plug in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C=18%2Fa ALIGN=MIDDLE  ALT=\"C=18%2Fa\"   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+=+%2818a%5E2%29%2Fa ALIGN=MIDDLE  ALT=\"9+=+%2818a%5E2%29%2Fa\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9+=+18a ALIGN=MIDDLE  ALT=\"9+=+18a\"   DISABLED_style= \"max-width:90%; height:auto;\" > Reduce\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9%2F18+=+a ALIGN=MIDDLE  ALT=\"9%2F18+=+a\"   DISABLED_style= \"max-width:90%; height:auto;\" > Divide both sides by 18.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F2=a ALIGN=MIDDLE  ALT=\"1%2F2=a\"   DISABLED_style= \"max-width:90%; height:auto;\" > Reduce.\r<BR>\n" );
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document.write( "So <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a=1%2F2 ALIGN=MIDDLE  ALT=\"a=1%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" >. So the value of C is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C=18%2Fa=18%2F%281%2F2%29=18%282%2F1%29=36 ALIGN=MIDDLE  ALT=\"C=18%2Fa=18%2F%281%2F2%29=18%282%2F1%29=36\"   DISABLED_style= \"max-width:90%; height:auto;\" > giving us the function <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%29=36%281%2F2%29%5Ex ALIGN=MIDDLE  ALT=\"f%28x%29=36%281%2F2%29%5Ex\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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