A model rocket is launched vertically upward so that its height (measured in feet) t sec after launch is given byh(t) = ?16t2 + 352t + 16
(a) Find the times when the rocket is at a height of 1168 ft. (Enter your answers as a comma-separated list.)
t =
sec
(b) How long is the rocket in flight? (Round your answer to the nearest whole number.)
sec





