document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1206667>Question 1206667</A>: <I><SPAN STYLE=\"word-break: break-all;\"> D is partly constant and partly varies with V. When V = 40, D = 150 and when V = 54, D = 192.<BR>\n" );
document.write( "(a) Find the formula connecting D and V<BR>\n" );
document.write( "(b) Hence, Find D when V = 73. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #844226 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39623)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=844226\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \"partly constant and partly varies...\"<BR>\n" );
document.write( "What?\r<BR>\n" );
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document.write( "I waited to see if someone gives you a response for this \"partly constant and partly varies\" problem.  Not see any yet.  Maybe this older one may help you:  https://www.algebra.com/algebra/homework/coordinate/word/Linear_Equations_And_Systems_Word_Problems.faq.question.1143596.html\r<BR>\n" );
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document.write( "MAYBE,....<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=D=mV%2Bk ALIGN=MIDDLE  ALT=\"D=mV%2Bk\"   DISABLED_style= \"max-width:90%; height:auto;\" > a linear form equation\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28150=m%2A40%2Bk%2C192=m%2A54%2Bk%29 ALIGN=MIDDLE  ALT=\"system%28150=m%2A40%2Bk%2C192=m%2A54%2Bk%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Equate the k expressions and solve for m.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=150-40m=192-54m ALIGN=MIDDLE  ALT=\"k=150-40m=192-54m\"   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=-54m%2B192=-40m%2B150 ALIGN=MIDDLE  ALT=\"-54m%2B192=-40m%2B150\"   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=-54m%2B40m=150-192 ALIGN=MIDDLE  ALT=\"-54m%2B40m=150-192\"   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=54m-40m=192-50 ALIGN=MIDDLE  ALT=\"54m-40m=192-50\"   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=14m=42 ALIGN=MIDDLE  ALT=\"14m=42\"   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=7m=21 ALIGN=MIDDLE  ALT=\"7m=21\"   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=highlight_green%28m=3%29 ALIGN=MIDDLE  ALT=\"highlight_green%28m=3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Use m to find value for k.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=150-40m ALIGN=MIDDLE  ALT=\"k=150-40m\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=150-40%2A3=150-120 ALIGN=MIDDLE  ALT=\"k=150-40%2A3=150-120\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28k=30%29 ALIGN=MIDDLE  ALT=\"highlight_green%28k=30%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "If this is the kind of method you expect ,  then D and V are to be related<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28D=3V%2B30%29 ALIGN=MIDDLE  ALT=\"highlight%28D=3V%2B30%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "(b)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=D=249 ALIGN=MIDDLE  ALT=\"D=249\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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