Suppose that in the interval 9 ≤ x ≤ 20 you know that f'(x) is negative and f''(x) is negative. Select the correct comparison. f(10) Select an answer f'(10) Select an answer f(10+h)-f(10) Select an answer lim h→0 f(15+h)-f(15) h h f'(10) Select an answer f(15) f'(15) lim h→0 0

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