document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1037635>Question 1037635</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose that the functions r and s<BR>\n" );
document.write( " are defined for all real numbers x<BR>\n" );
document.write( " as follows.\r<BR>\n" );
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document.write( "r(x)=2x+6<BR>\n" );
document.write( "s(x)=3x\r<BR>\n" );
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document.write( "write the expression for (r+s)(x),(r-s)(x) and evaluate (r*s)(-1) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #652320 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39618)</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=652320\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is mostly about substitutions and doing simple arithmetic of functions.  \r<BR>\n" );
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document.write( "Only doing the last part of the question,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%28x%29%2As%28x%29=r%2As%28x%29 ALIGN=MIDDLE  ALT=\"r%28x%29%2As%28x%29=r%2As%28x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282x%2B6%29%283x%29 ALIGN=MIDDLE  ALT=\"%282x%2B6%29%283x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6x%5E2%2B18x ALIGN=MIDDLE  ALT=\"6x%5E2%2B18x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-<BR>\n" );
document.write( "Let x=-1.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6%28-1%29%5E2%2B18%28-1%29 ALIGN=MIDDLE  ALT=\"6%28-1%29%5E2%2B18%28-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6-18 ALIGN=MIDDLE  ALT=\"6-18\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28-12%29 ALIGN=MIDDLE  ALT=\"highlight%28-12%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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