document.write( "Question 292941: The distance traveled by an object moving in a straight line is given by S= t^2-2t, where S is in feet and t is the seconds the object has been in motion. How long (to the nearest tenth) will it take the object to move 15 ft \n" ); document.write( "

Algebra.Com's Answer #211517 by Fombitz(32388) $\"\"$ $\"About$

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When does S(t)=15?
\n" ); document.write( " $\"t%5E2-2t=15\"$
\n" ); document.write( " $\"t%5E2-2t-15=0\"$
\n" ); document.write( " $\"%28t-5%29%28t%2B3%29=0\"$
\n" ); document.write( "Two solutions:
\n" ); document.write( " $\"t-5=0\"$
\n" ); document.write( " $\"t=5\"$
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\n" ); document.write( ".
\n" ); document.write( " $\"t%2B3=0\"$
\n" ); document.write( " $\"t=-3\"$
\n" ); document.write( "Since t represents time, a time of -3 seconds doesn't make sense for this problem.
\n" ); document.write( ".
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\n" ); document.write( " $\"highlight%28t=5%29\"$ \n" ); document.write( "

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