SOLUTION: 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 wil

Algebra ->  Customizable Word Problem Solvers  -> Geometry -> SOLUTION: 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 wil      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


   



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?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
f(t)= -16t^2 + 96t = 128
Solve for t