document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=871228>Question 871228</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Question:\r<BR>\n" );
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document.write( "The function f(x) is defined as f(x)= -4(x+2)squared-4. Which of the following statements correctly describes the intervals of the domain?\r<BR>\n" );
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document.write( "Answer Choices:\r<BR>\n" );
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document.write( "A.) The function is increasing on the interval (-&#8734;,&#8734;) and is negative on the interval (-&#8734;,&#8734;).<BR>\n" );
document.write( "B.) The function is increasing on the interval (-&#8734;,-4) and decreasing on the interval (-4,&#8734;); it is positive on the interval (-&#8734;,2) and negative on the interval (2,&#8734;).<BR>\n" );
document.write( "C.) The function is increasing on the interval (&#8734;,2) and decreasing on the interval (2,&#8734;); it is positive on the interval (-&#8734;,-4) and negative on the interval (-4,&#8734;).<BR>\n" );
document.write( "D.) The function is increasing on the interval (&#8734;,-2) and decreasing on the interval (-2,&#8734;); it is negative on the interval (-&#8734;,&#8734;).\r<BR>\n" );
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document.write( "Can you please explain how you got the answer please. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #525405 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=525405\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The parabola is in vertex form.<BR>\n" );
document.write( "The vertex is (-2,-4) and since the multiplier is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-4 ALIGN=MIDDLE  ALT=\"-4\"   DISABLED_style= \"max-width:90%; height:auto;\" > in front of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%2B2%29%5E2 ALIGN=MIDDLE  ALT=\"%28x%2B2%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >, the parabola opens downwards and the max value is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=-4 ALIGN=MIDDLE  ALT=\"y=-4\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
document.write( "Here's a graph,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28300%2C300%2C-8%2C8%2C-14%2C2%2Cgrid%281%29%2Cblue%28line%28-2%2C-20%2C-2%2C20%29%29%2Cgraph%28300%2C300%2C-8%2C8%2C-14%2C2%2C-4%28x%2B2%29%5E2-4%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Looks like the function increases from <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-infinity ALIGN=MIDDLE  ALT=\"x=-infinity\"   DISABLED_style= \"max-width:90%; height:auto;\" > to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=2 ALIGN=MIDDLE  ALT=\"x=2\"   DISABLED_style= \"max-width:90%; height:auto;\" >,<BR>\n" );
document.write( "decreases from <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-2 ALIGN=MIDDLE  ALT=\"x=-2\"   DISABLED_style= \"max-width:90%; height:auto;\" > to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=infinity ALIGN=MIDDLE  ALT=\"x=infinity\"   DISABLED_style= \"max-width:90%; height:auto;\" >, and is always negative. </SPAN>\n" );
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