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Mathematics, 05.05.2020 10:24 montgomerykarloxc24x

A daredevil jumps off the CN Tower and falls freely for several seconds before releasing his parachute. His height, h, in meters, t seconds after jumping can be modeled by: h=-4.9t^2+t+360 before he released his parachute; and h= -4t +142 after he released his parachute.

How long after jumping did the daredevil release his parachute?

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