Question: 184) An object is propelled vertically upward from the top of a 288-foot building. The quadratic functions(t)=-16t2+224t+288 models the ball's height above the ground, s(t),

184) An object is propelled vertically upward from the top of a 288-foot building. The quadratic functions(t)=-16t2+224t+288 models the ball's height above the ground, s(t), in feet, t seconds after it was thrown. After how many seconds does the object reach its maximum height? Round to the nearest tenth of a second if necessary.

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