document.write( "Question 887310: Please help me solve this: A ball is projected upward from ground level. After t seconds, its height in feet is a function defined by f(t)= -16t^2 + 96t. After how many seconds will it reach a height of 128 feet? \n" ); document.write( "
Algebra.Com's Answer #536506 by Alan3354(69443)\"\" \"About 
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f(t)= -16t^2 + 96t = 128
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