Question: A model rocket is launched from a raised platform at a speed of 176 feet per second. Its height in feet is given by h(t)=-16t^(2)+176t+20(t)=(

A model rocket is launched from a raised platform at a speed of 176 feet per second. Its height in feet is given by h(t)=-16t^(2)+176t+20(t)=( seconds after launch ) . After how many seconds does the object reach its maximum height? 20 seconds 2.75 seconds 7.5 seconds 5.5 seconds

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