Mathematics, 15.07.2019 00:50 esta54

Daniel dives into a swimming pool. the height of his head is represented by the function h(t) = -8t2 - 28t + 60, where t is the time in seconds and h(t) is the height of his head, in inches. how many seconds will it take for daniel's head to reach the surface of the pool?

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Daniel dives into a swimming pool. the height of his head is represented by the function ...