document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=65293>Question 65293</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi! I need some help with this problem and there is 3 parts to it.\r<BR>\n" );
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document.write( "#1. Is f(x)=3x-3 a function?<BR>\n" );
document.write( "#2. Evaluate f(a+1) for f defined in problem #1.<BR>\n" );
document.write( "#3. What are the domain and range for f defined in problem #1?\r<BR>\n" );
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document.write( "Thanks so much for your help! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #45842 by </B><A HREF=/tutors/aboutme.mpl?userid=funmath><B>funmath(2933)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=funmath><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=45842\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> #1. Is f(x)=3x-3 a function?<BR>\n" );
document.write( "Yes.  For every value of x, there is one and only one f(x).<BR>\n" );
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document.write( "#2. Evaluate f(a+1) for f defined in problem #1.<BR>\n" );
document.write( "Substitute a+1 for x.<BR>\n" );
document.write( "f(a+1)=3(a+1)-3<BR>\n" );
document.write( "f(a+1)=3a+3-3<BR>\n" );
document.write( "f(a+1)=3a<BR>\n" );
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document.write( "#3. What are the domain and range for f defined in problem #1?<BR>\n" );
document.write( "There are no restrictions on x in a polynomial, so the domain is ALL REAL NUMBERS.  in set builder notation: {x|x=R}<BR>\n" );
document.write( "Because x can range from negative infinity to positive infinity, the range is also ALL REAL NUMBERS.  in set builder notation: {y|y=R}<BR>\n" );
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document.write( "Happy Calculating!!!<BR>\n" );
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