document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=519021>Question 519021</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me understand how to work this problem.\r<BR>\n" );
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document.write( "Evaluate each function at the given values of the independent variable and simplify.\r<BR>\n" );
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document.write( "f(x) = 4x + 5\r<BR>\n" );
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document.write( "a. f(6) b. f(x+1)  c. f(-x) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #345355 by </B><A HREF=/tutors/aboutme.mpl?userid=jessica43><B>jessica43(140)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jessica43><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=345355\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> For these type of problems, you need to plug the value of x into the equation.<BR>\n" );
document.write( "a)For this part, the problem is asking you what does the function/equation equal when x=6.  So plug 6 in for x:<BR>\n" );
document.write( "f(x) = 4x +5<BR>\n" );
document.write( "f(6) = 4(6) +5<BR>\n" );
document.write( "f(6) = 24 + 5<BR>\n" );
document.write( "f(6) = 29<BR>\n" );
document.write( "b) Now plug in (x+1) for x:<BR>\n" );
document.write( "f(x) = 4x + 5<BR>\n" );
document.write( "f(x+1) = 4(x+1) + 5<BR>\n" );
document.write( "f(x+1) = 4x + 4 + 5<BR>\n" );
document.write( "f(x+1) = 4x + 9<BR>\n" );
document.write( "c)Now plug in -x for x:<BR>\n" );
document.write( "f(x) = 4x + 5<BR>\n" );
document.write( "f(-x) = 4(-x) + 5<BR>\n" );
document.write( "f(-x) = -4x + 5 </SPAN>\n" );
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