21) A racket is launched in the air . Its height , in meters , I seconds after Lunch is given by the function* ` ) = - 4.97* + 229+ + 234. *)

hey can you help me to find out this? this is from my assignment so i am trying to find out

21) A racket is launched in the air . Its height , in meters , I seconds after Lunch is given by the function*` ) = - 4.97* + 229+ + 234.*) Determine the height of the market ? seconds after launch .`) Find the maximum height the market attains . Round In run decimal places.[ ) Incumming how long the market will he in flight . Hound In ran decimal places.