document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=90026>Question 90026</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the domain of f (x) = 7 + 3x + 21 , and express it using interval<BR>\n" );
document.write( "notation. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #65338 by </B><A HREF=/tutors/aboutme.mpl?userid=tutorcecilia><B>tutorcecilia(2152)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=tutorcecilia><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=tutorcecilia><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=65338\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> f (x) = 7 + 3x + 21 <BR>\n" );
document.write( "Domain is any real number.  Beacause, you can plug-in any number (zero, negative or positive) and you will still get a real number.<BR>\n" );
document.write( "(+infinity , -infinity) </SPAN>\n" );
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