Calc AB Question

<p>Figured I'd attract the quickest response in this forum. Refer to the question here: AP</a> Calculus: finding the absolute maximum value x from a f' graph? graph included? - Yahoo! Answers</p>

<p>I have a different answer than what the best answer posted. For 'B' I got 5, -7,7 . Whose right? I think I am since I have endpoints :)</p>

<p>Oh and the guy didn't give an answer for D. Anyone care to supply an answer with an explanation?</p>

<p>X is equal to 7. Remember that when the derivative is 0 the f graph is at its local min or max.</p>