A baseball is thrown up in the air from an initial height of 6 feet. Its height above the ground (in feet) t seconds after being thrown is given by the function h(t)=-16t^2+46t+6. How long will it take (in seconds) for the baseball to hit the ground?
A) 2 seconds B) 5/2 seconds c) 3 seconds D) 4 seconds

• Correct Option is Option (A)
  if the ball reaches the ground, h=0ft
  0=16t^2 - 46t -6 => (16t+2) (t-3) = 0
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