document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1199828>Question 1199828</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 7.<BR>\n" );
document.write( "Let q represent the number of widgets sold each week by a store, p represent the price in dollars of a widget, and D represent the demand.<BR>\n" );
document.write( "Suppose that the demand function is q=D(p)= 120/square root of p<BR>\n" );
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document.write( "What is the decrease in the demand when p is changed from $9 to $25?\r<BR>\n" );
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document.write( "Second question - Let f(x,y)=5y+10x what would be the value of f(6,2)  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #833802 by </B><A HREF=/tutors/aboutme.mpl?userid=math_tutor2020><B>math_tutor2020(3817)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=math_tutor2020><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=833802\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font color=black size=3><BR>\n" );
document.write( "Problem 1\r<BR>\n" );
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document.write( "Plug in p = 9 to find q = D(p)<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=D%289%29+=+120%2F3 ALIGN=MIDDLE  ALT=\"D%289%29+=+120%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=D%289%29+=+40 ALIGN=MIDDLE  ALT=\"D%289%29+=+40\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Repeat for p = 25\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=D%2825%29+=+120%2Fsqrt%2825%29 ALIGN=MIDDLE  ALT=\"D%2825%29+=+120%2Fsqrt%2825%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=D%2825%29+=+120%2F5 ALIGN=MIDDLE  ALT=\"D%2825%29+=+120%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=D%2825%29+=+24 ALIGN=MIDDLE  ALT=\"D%2825%29+=+24\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The demand goes from 40 to 24, which is a decrease of 16 (since 40-24 = 16).\r<BR>\n" );
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document.write( "Problem 2\r<BR>\n" );
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document.write( "The given function is  <BR>\n" );
document.write( "f(x,y) = 5y+10x\r<BR>\n" );
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document.write( "We want to find f(6,2)<BR>\n" );
document.write( "Wherever you see 'x', replace it with 6.<BR>\n" );
document.write( "Wherever you see 'y', replace it with 2.<BR>\n" );
document.write( "Then simplify.\r<BR>\n" );
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document.write( "f(x,y) = 5y+10x<BR>\n" );
document.write( "f(6,y) = 5y+10*6 ...... replace x with 6<BR>\n" );
document.write( "f(6,2) = 5*2+10*6 ...... replace y with 2<BR>\n" );
document.write( "f(6,2) = 10+60<BR>\n" );
document.write( "f(6,2) = 70<BR>\n" );
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