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**justine_0612** a flare is fired upwards from the deck of a chip. The flar hits the water. The height of the flare, h, in metres, above the water t seconds is given by the function h= -4.9t^2 + 98t + 8

a. How long does it take the flare to hit the water?

b.How high is the deck of the ship above the water?

I calculated the height of the flare as 498m through completing the square, and i calculated the time to reach maximum height as 10 seconds. But now I'm stuck.

Can anyone help me plz!!