For the pair of functions, find the indicated domain.f(x) = 
, g(x) = 
Find the domain of f + g.
A. (-?, ?)
B. (-?, -4) ? (-4, 7) ? (7, ?)
C. (-?, -7) ? (-7, 4) ? (4, ?)
D. (-?, -4) ? (-4, -3) ? (-3, ?)
Answer: C
Mathematics
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x + 1= 
x - 1
A. - 
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C. - 
D. 
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A. - 
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