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Question 9 Use the first derivative test to answer the following: the function v(x) = 7x + 224x - 5 has one critical number at x = and is Select an answer Question Help: Video Submit Question Question 10 Question Help: Video Use the first derivative test to answer the following: the function f(x) = 2x³ − 36x² + 210x + 6 has a local minimum at x = and a local maximum at x = Submit Question Question 11 0/2 pts 54 Details at x = 0/2 pts 54 Details Question Help: Video Submit Question 16 Use the first derivative test to answer the following: the function f(x) = 49x + x and a local minimum at x = 0/2 pts 54 Details has a local maximum