document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1182625>Question 1182625</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I keep trying over and over but can't get these right.. can someone explain what I have to do? It probably seems really simple to someone else..\r<BR>\n" );
document.write( "\n" );
document.write( "https://imgur.com/a/po5UUI5 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #812723 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13208)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=812723\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "I don't think the answer from the other tutor is what the question was asking for....<br><BR>\n" );
document.write( "The domain of a function is the set of values that the independent variable can take on; the range is the set of values that the dependent variable can take on.<br><BR>\n" );
document.write( "Rita's pay depends on the number of copies she sells, so her pay is the dependent variable and the number of copies she sells is the independent variable.<br><BR>\n" );
document.write( "So the domain in this problem is the possible numbers of copies she can sell.  She obviously can't sell a negative number of copies, so the least she can sell is 0; and she only has 140 copies, so the maximum number she can sell is 140.  So the set of values for the domain (the possible numbers of copies N she can sell) is 0 <= N <= 140, with the restriction that x is an integer.<br><BR>\n" );
document.write( "ANSWER: Set of values for domain: {0, 1, 2, ..., 139, 140}<br><BR>\n" );
document.write( "If she sells no copies, she still gets paid: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%280%29=20%280%29%2B1800=1800 ALIGN=MIDDLE  ALT=\"P%280%29=20%280%29%2B1800=1800\"   DISABLED_style= \"max-width:90%; height:auto;\" >, so the minimum her pay can be is 1800.  If she sells all 140 copies, her pay is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28140%29=20%28140%29%2B1800=2800%2B1800=4600 ALIGN=MIDDLE  ALT=\"P%28140%29=20%28140%29%2B1800=2800%2B1800=4600\"   DISABLED_style= \"max-width:90%; height:auto;\" >, so her maximum pay is 4600.<br><BR>\n" );
document.write( "And of course she can only sell whole numbers of copies, so...<br><BR>\n" );
document.write( "ANSWER: Set of values for the range: {1800, 1820, 1840, ..., <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cross%284400%29 ALIGN=MIDDLE  ALT=\"cross%284400%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > 4580, 4600}<br><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );