document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=698961>Question 698961</A>: <I><SPAN STYLE=\"word-break: break-all;\"> This algebra problem is about variation.\r<BR>\n" );
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document.write( "The prices of three sizes of pizza at a pizza shop are as follows.\r<BR>\n" );
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document.write( "9-inch: $8.78<BR>\n" );
document.write( "12-inch: $11.78<BR>\n" );
document.write( "15-inch: $14.18\r<BR>\n" );
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document.write( "You would expect that the price of a certain size of pizza would be directly proportional to its surface area. Is that the case for this pizza shop? If not, which size of pizza is the best buy?\r<BR>\n" );
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document.write( "This is really confusing. Will someone please explain and answer? Thank you in advance! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #431128 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=431128\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 9-inch: $8.78\r<BR>\n" );
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document.write( "Area = pi*r^2<BR>\n" );
document.write( "r= 4.5	<BR>\n" );
document.write( "Area =63.64<BR>\n" );
document.write( "Price = 8.78\r<BR>\n" );
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document.write( "price / sq. inch = 8.78/63.64\r<BR>\n" );
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document.write( "=$0.138\r<BR>\n" );
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document.write( "12-inch: $11.78<BR>\n" );
document.write( "r= 6.0	<BR>\n" );
document.write( "Area =113.14	11.78	\r<BR>\n" );
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document.write( "Price = 11.78\r<BR>\n" );
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document.write( "price / sq. inch = 11.78/113.14<BR>\n" );
document.write( "=0.104 \r<BR>\n" );
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document.write( "15-inch: $14.18<BR>\n" );
document.write( "Area = 176.79 sq. inches<BR>\n" );
document.write( "Price=	14.18	<BR>\n" );
document.write( "price/square inch =$ 0.080\r<BR>\n" );
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document.write( "You know which is cheaper now </SPAN>\n" );
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