document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=647491>Question 647491</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello, My problem is - If x = -2, y = 3, and z = 4, which expression has the greatest value?<BR>\n" );
document.write( "a. z(x-y)<BR>\n" );
document.write( "b. z(x-y) to the 2nd power - x<BR>\n" );
document.write( "c. z(x-y) to the 3rd power + x<BR>\n" );
document.write( "d. z over x - xy<BR>\n" );
document.write( "-I have looked several chapters back and still can't find a thing on how to do this. <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 #406227 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=406227\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a)\r<BR>\n" );
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document.write( "z(x-y)\r<BR>\n" );
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document.write( "4(-2-3) ... Plug in x = -2, y = 3, and z = 4\r<BR>\n" );
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document.write( "4(-5)\r<BR>\n" );
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document.write( "-20\r<BR>\n" );
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document.write( "So z(x-y) = -20 when x = -2, y = 3, and z = 4\r<BR>\n" );
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document.write( "b)\r<BR>\n" );
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document.write( "z(x-y)^2 - x\r<BR>\n" );
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document.write( "4(-2-3)^2 - (-2) ... Plug in x = -2, y = 3, and z = 4\r<BR>\n" );
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document.write( "4(-2-3)^2 + 2\r<BR>\n" );
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document.write( "4(-5)^2 + 2\r<BR>\n" );
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document.write( "4(25) + 2\r<BR>\n" );
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document.write( "100 + 2\r<BR>\n" );
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document.write( "102\r<BR>\n" );
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document.write( "So z(x-y)^2 - x = 102 when x = -2, y = 3, and z = 4\r<BR>\n" );
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document.write( "So far, choice B is the largest.\r<BR>\n" );
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document.write( "c)\r<BR>\n" );
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document.write( "z(x-y)^3 + x\r<BR>\n" );
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document.write( "4(-2-3)^3 + (-2)\r<BR>\n" );
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document.write( "4(-2-3)^3 - 2\r<BR>\n" );
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document.write( "4(-5)^3 - 2\r<BR>\n" );
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document.write( "4(-125) - 2\r<BR>\n" );
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document.write( "-500 - 2\r<BR>\n" );
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document.write( "-502\r<BR>\n" );
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document.write( "So z(x-y)^3 + x = -502 when x = -2, y = 3, and z = 4\r<BR>\n" );
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document.write( "Choice C is NOT larger than choice B. So choice B is still the largest.\r<BR>\n" );
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document.write( "d)\r<BR>\n" );
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document.write( "I'm assuming this one is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z%2Fx+-+xy ALIGN=MIDDLE  ALT=\"z%2Fx+-+xy\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "z/x - xy\r<BR>\n" );
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document.write( "4/(-2) - (-2)(3)\r<BR>\n" );
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document.write( "-2 - (-2)(3)\r<BR>\n" );
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document.write( "-2 - (-6)\r<BR>\n" );
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document.write( "-2 + 6\r<BR>\n" );
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document.write( "4\r<BR>\n" );
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document.write( "So z/x - xy = 4 when x = -2, y = 3, and z = 4\r<BR>\n" );
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document.write( "Answer:\r<BR>\n" );
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document.write( "Choice B is has the greatest value.\r<BR>\n" );
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document.write( "Jim<BR>\n" );
document.write( "<font color=\"red\">--------------------------------------------------------------------------------------------------------------</font> </SPAN>\n" );
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