document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=188373>Question 188373</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780321501080/algebrahomeworkh>Survey of Mathematics with applications</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> If Amanda Miller spent $15.72 on pet supplies before tax, what was the price of the pet supples she purchased before the discount? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #141213 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=141213\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font face=\"Goudy Old Style\" size=\"+2\">\r<BR>\n" );
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document.write( "Let <i>x</i> be the price before the discount and <i>r</i> be the discount rate expressed as a decimal.  Then <i>x</i><i>r</i> is the amount of the discount.  The price minus the amount of the discount is $15.72, so:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \ \ \ \ \ \ \ \ \ \  x - xr =  15.72\">\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \ \ \ \ \ \ \ \ \ \  x(1 - r) =  15.72\">\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \ \ \ \ \ \ \ \ \ \  x =  \frac{15.72}{1 - r}\">\r<BR>\n" );
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document.write( "That's as far as I can go since you didn't bother to share the discount rate.\r<BR>\n" );
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document.write( "John<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE e^{i\pi} + 1 = 0\"><BR>\n" );
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