18. The graphs of f'(x) and f"(x) are shown below. Which of the following statements best describes the equation of f(x)? Graph of f'(x) Graph off"(x) A. A cosine function B. A sine function C. A cubic D. A logarithmic function E. A quadratic 4 3 2 1 0 -1 -2 -3 4 3 2 1 0 -1 -2 -3 -3 -3 بنا -2 -1 -2 -1 0 1 2 0 1 2 3 4 لنا + 3 4

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A: First‐class postage is $0.37 for a letter weighing up to one ounce and $0.24 for each additional…

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A: Topic:- application of derivatives

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