document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=883723>Question 883723</A>: <I><SPAN STYLE=\"word-break: break-all;\"> i need help solving this please... i have tried everything i think of but i am stuck the question is: write an exponential function whose graph passes through the points (0,-3) and (4,-48). thanks so much your help is very much appreciated.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #533710 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=533710\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> First plug in (x,y) = (0,-3)\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "y = a*b^x<BR>\n" );
document.write( "-3 = a*b^0<BR>\n" );
document.write( "-3 = a*1<BR>\n" );
document.write( "-3 = a<BR>\n" );
document.write( "a = -3\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Now plug in a = -3, and (x,y) = (4,-48)\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "y = a*b^x<BR>\n" );
document.write( "y = -3*b^x<BR>\n" );
document.write( "-48 = -3*b^4<BR>\n" );
document.write( "-48/(-3) = b^4<BR>\n" );
document.write( "16 = b^4<BR>\n" );
document.write( "b^4 = 16<BR>\n" );
document.write( "b = 16^(1/4)<BR>\n" );
document.write( "b = 2\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "So a = -3, b = 2 giving us this\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "y = a*b^x<BR>\n" );
document.write( "y = -3*2^x\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "So the final answer is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+-3%282%29%5Ex ALIGN=MIDDLE  ALT=\"y+=+-3%282%29%5Ex\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );