document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1170952>Question 1170952</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a. State sales tax y is directly proportional to retail price x . An item that sells for 178 dollars has a sales tax of 10.22 dollars. Find a mathematical model that gives the amount of sales tax y in terms of the retail price x . <BR>\n" );
document.write( "Your answer is y =\r<BR>\n" );
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document.write( "b. What is the sales tax on a 310 dollars purchase?<BR>\n" );
document.write( "Your answer is </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #795827 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20849)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=795827\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "State sales tax <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+ ALIGN=MIDDLE  ALT=\"y+\"   DISABLED_style= \"max-width:90%; height:auto;\" >is directly proportional to retail price <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+ ALIGN=MIDDLE  ALT=\"x+\"   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=y=kx ALIGN=MIDDLE  ALT=\"y=kx\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "if an item that sells for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=178 ALIGN=MIDDLE  ALT=\"178\"   DISABLED_style= \"max-width:90%; height:auto;\" > dollars has a sales tax of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10.22 ALIGN=MIDDLE  ALT=\"10.22\"   DISABLED_style= \"max-width:90%; height:auto;\" > dollars and the tax is proportional to the price, the tax ratio is \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=10.22%2F178=0.0574 ALIGN=MIDDLE  ALT=\"k=10.22%2F178=0.0574\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Find a mathematical model that gives the amount of sales tax <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+ ALIGN=MIDDLE  ALT=\"y+\"   DISABLED_style= \"max-width:90%; height:auto;\" >in terms of the retail price <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   DISABLED_style= \"max-width:90%; height:auto;\" > .\r<BR>\n" );
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document.write( " answer is:\r<BR>\n" );
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document.write( " <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=0.0574x ALIGN=MIDDLE  ALT=\"y+=0.0574x\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "b. What is the sales tax on a <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=310 ALIGN=MIDDLE  ALT=\"310\"   DISABLED_style= \"max-width:90%; height:auto;\" > dollars purchase?\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=0.0574x ALIGN=MIDDLE  ALT=\"y+=0.0574x\"   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=y=0.0574%2A310 ALIGN=MIDDLE  ALT=\"y=0.0574%2A310\"   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=y=17.79 ALIGN=MIDDLE  ALT=\"y=17.79\"   DISABLED_style= \"max-width:90%; height:auto;\" > dollars<BR>\n" );
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