document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1110750>Question 1110750</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If s^3*t^4*u^3*w > 0 and w < 0 , which of the following must be true? \r<BR>\n" );
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document.write( "1)s > 0<BR>\n" );
document.write( "2)u < 0<BR>\n" );
document.write( "3)su > 0<BR>\n" );
document.write( "4)su < 0<BR>\n" );
document.write( "5)t > 0 </SPAN>\n" );
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document.write( "t^4 is always positive or 0; since the product is positive, t^4 must be positive.<br><BR>\n" );
document.write( "Since t^4 is positive and w is negative, and the product s^3t^4u^3w is positive, s^3u^3 must be negative.<br><BR>\n" );
document.write( "But s^3u^3 is (su)^3; therefore su must be negative.<br><BR>\n" );
document.write( "Answer: su < 0 </SPAN>\n" );
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