document.write( "Question 1074612: A projectile is fired straight upward from ground level with an initial velocity of 80 feet per second. During which interval of time will the projectile's height exceed 96 feet?
\n" ); document.write( " I got h=-16t^2+80t > 96
\n" ); document.write( "Can someone help me with this? Am I wrong here?
\n" ); document.write( "Thank you. \n" ); document.write( "
Algebra.Com's Answer #689257 by Alan3354(69443)\"\" \"About 
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A projectile is fired straight upward from ground level with an initial velocity of 80 feet per second. During which interval of time will the projectile's height exceed 96 feet?
\n" ); document.write( " I got h=-16t^2+80t > 96
\n" ); document.write( "Can someone help me with this? Am I wrong here?
\n" ); document.write( "--------------
\n" ); document.write( "You're not wrong, but it's easier to solve the equation first.
\n" ); document.write( "h(t) = -16t^2+80t = 96
\n" ); document.write( "-16t^2 + 80t - 96 = 0
\n" ); document.write( "-t^2 + 5t - 6 = 0
\n" ); document.write( "t^2 - 5t + 6 = 0
\n" ); document.write( "(t - 2)*(t - 3) = 0
\n" ); document.write( "t = 2, 3
\n" ); document.write( "It's at 96 feet at t=2 second (ascending) and t=3 seconds (descending).
\n" ); document.write( "It's above 96 feet 2 < t < 3\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
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