Question: Please help me with these. Thank you Thinking ( /11 marks) 30. A water balloon is catapulted into the air from the top of a

Please help me with these. Thank you

Thinking ( /11 marks) 30. A water balloon is catapulted into the air from the top of a building. The height, h(t) in metres, of the balloon after t seconds is h(t) = -5t2 + 30t + 10. When will the balloon reach a height of 30 m (4 marks) 31. Determine the range of the function f(x)= 4 - 3x, if the domain is {-3,-1,0,2,5,6}. (3 marks )

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