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P237
A

6. Domain
Range
X intercepts: None
Y intercepts: 2
Interval over which f is increasing :
Interval over which f is decreasing: None
Interval over which f is constant: [-3,3]
Discontinuity: x= -3.
Note: Since I don't know which points ( (-3,-2) or (-3,2) ) are closed or open.
If (-3,2) is closed, then the interval over which f is constant is [-3,3];
If (-3,2) is open, then the interval over which f is constant is (-3,3];

B.
18.

22.
The axis: x=2
Vertex: (2,4)
Maximum: f(x)=4
No minimum
Range:

24.
The axis: x=3
Vertex: (3,-4)
No Maximum
Minimum: -4
Range:
...

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