(a) Evaluate f(15), and say what it means in practical terms. (b) Is f invertible? Explain. (c) Evaluate f−1(120), and say what it means in practical terms.

Applications and Investigations in Earth Science (9th Edition)
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Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
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Chapter1: The Study Of Minerals
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Figure 1.43 is a graph of the function f(t). Here f(t) is the depth in meters below the Atlantic Ocean floor where t million-year-old rock can be found.20

(a) Evaluate f(15), and say what it means in practical terms.

(b) Is f invertible? Explain.

(c) Evaluate f−1(120), and say what it means in practical terms.

(d) Sketch a graph of f−1.

 

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