document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=72913>Question 72913</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0618250204/algebrahomeworkh>mcgougal littell algebra 2</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Write an exponential function of the form y=ab^x whose graph passes through the given points.\r<BR>\n" );
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document.write( "17.  (1,4),(2,12) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #52141 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=52141\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Write an exponential function of the form y=ab^x whose graph passes through the given points. <BR>\n" );
document.write( " (1,4),(2,12)<BR>\n" );
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document.write( "The form is y = ab^x<BR>\n" );
document.write( "12 = ab^2<BR>\n" );
document.write( "4  = ab^1<BR>\n" );
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document.write( "Divide the 1st by the 2nd to get:<BR>\n" );
document.write( "3 = b<BR>\n" );
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document.write( "Substitute that into the 2nd equation to solve for \"a\":<BR>\n" );
document.write( "4 = a*3^1<BR>\n" );
document.write( "a=(4/3)<BR>\n" );
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document.write( "EQUATION:<BR>\n" );
document.write( "y = (4/3)*2^x<BR>\n" );
document.write( "==================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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