document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=982166>Question 982166</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The sales tax in one state is 7%. Write a function rule for finding the total cost of an item with selling price x. Then find the total cost of a CD player with a selling price of $150. <BR>\n" );
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document.write( " f(x) = 7 + x; $151.07 <BR>\n" );
document.write( " f(x) =1.07x; $160.50 <BR>\n" );
document.write( " f(x) = 0.07x; $10.50 <BR>\n" );
document.write( " f(x) = x – 7; $148.93 <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 #603025 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</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=603025\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "The sales tax in one state is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7 ALIGN=MIDDLE  ALT=\"7\"   DISABLED_style= \"max-width:90%; height:auto;\" >% or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.07 ALIGN=MIDDLE  ALT=\"0.07\"   DISABLED_style= \"max-width:90%; height:auto;\" >. <BR>\n" );
document.write( "if selling 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;\" >, then tax will be <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.07x ALIGN=MIDDLE  ALT=\"0.07x\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "then to find the total cost of a CD player with a selling price of $<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=150 ALIGN=MIDDLE  ALT=\"x=150\"   DISABLED_style= \"max-width:90%; height:auto;\" > you need to add the tax which is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.07%2A150=10.50 ALIGN=MIDDLE  ALT=\"0.07%2A150=10.50\"   DISABLED_style= \"max-width:90%; height:auto;\" > and you have the total cost of a CD player\r<BR>\n" );
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document.write( "a function rule for finding the total cost will be\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%29+=1%2Ax%2B.07x ALIGN=MIDDLE  ALT=\"f%28x%29+=1%2Ax%2B.07x\"   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=f%28x%29+=1.07x ALIGN=MIDDLE  ALT=\"f%28x%29+=1.07x\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "then you have\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%29+=1.07%2A150 ALIGN=MIDDLE  ALT=\"f%28x%29+=1.07%2A150\"   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=f%28x%29+=160.50 ALIGN=MIDDLE  ALT=\"f%28x%29+=160.50\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "so, your answer is  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%29+=1.07x ALIGN=MIDDLE  ALT=\"f%28x%29+=1.07x\"   DISABLED_style= \"max-width:90%; height:auto;\" >; $<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=160.50+ ALIGN=MIDDLE  ALT=\"160.50+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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