document.write( "Question 1162225: A monkey throws a nut down to the ground from a branch 15 m up. The function
\n" ); document.write( "ℎ(t) = −5t^2 − 10t + 15 models the height of the nut, in metres, and t is the time in seconds.
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Algebra.Com's Answer #785964 by ikleyn(52879) $\"\"$ $\"About$

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document.write( "Solve the quadratic equation  \r\n" );
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document.write( "    h(t) = 0,   which is  -5t^2 - 10t + 15 = 0.\r\n" );
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document.write( "Accept only positive root t > 0 and discard the negative root, since this equation, by its construction,\r\n" );
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document.write( "is valid (makes physical sense) for positive values of the parameter t, only.\r\n" );
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