$\text { Find the critical number of the function } f ( x ) = - 6 x ^ { 2 } + 108 x + 7$

question 20

Multiple Choice

$\text { Find the critical number of the function } f ( x ) = - 6 x ^ { 2 } + 108 x + 7$

• A) \(x = 18\)
• B) \(x = 9\)
• C) \(x = 84\)
• D) \(x = 14\)
• E) \(x = 7\)

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