An object dropped from a height of 600 feet has a height h(t) after t seconds given by h(t) = 600 − 16t^2 Express t as a function of height h and find the time it takes to reach a height of 400 feet. Be sure to include a graph of h(t) and your new function, and use this graph to explain how you know your answer is correct. You may use demos, GeoGebra, or a graphing calculator to make this graph.

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