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answers:
Alan say: I (one ) and III(3) are true,
II is false.


I. f(-3)<0 (True , f(-3) = -6 )
II. f'(-3) < 0 (False, it is a critical point, so f'(-3) =0 )
III. f" (-3) < 0 ( True, the graph is concave down at this point, f"(-3) is negative
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Ash say: The critical point on the graph represents (x,f(x)).
In this case x=-3 and f(-3)=-6 which is <0
So I is true.

As for the others..
f'(-3) will be a horizontal tangent which means f'(-3)=0
since f'(-3) is 0 then f''(-3) = 0
So both II and III are false..
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jean say: 2, 567;;de.4
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