Find the domain of the composite function f?g. Write the domain in interval notation.f(x) = 
, g(x) = 
A. (-?, -9) ? (-9, 0) ? (0, ?)
B. (-?, ?)
C. (-?, -8) ? (-8, 0) ? (0, ?)
D. (-?, -9) ? (-9, -8) ? (-8, 0) ? (0, ?)
Answer: C
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A. 1, 0, -1, 0 B. 0, 0, 0, 0 C. 0, 1, 0, -1 D. 1, 1, 1, 1
Solve the problem.Use a tree to show the parent-child relationships in the following family. Ira has three children: Aaron, Jonathan, and Ellen. Aaron has one child: Thomas. Jonathan has one child: Birgit. Ellen has two children: Alex and Alan.
A. 
B. 
C. 
D. 
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A. 
B. 