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Mathematics 23 Online
OpenStudy (anonymous):

find the height in feet of the rock after 5 seconds in the air. A rock is launched from a cannon. Its height, h(x), can be represented by a quadratic function in terms of time, x, in seconds. After 1 second, the rock is 243 feet in the air; After 2 seconds,it is 452 feet in the air.

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