Find the domain of the composite function f?g.f(x) = x + 6,g(x) = 
A. (-?, -7) or (-7, ?)
B. (-?, -7) or (-7, -6) or (-6, ?)
C. (-?, -13) or (-13, ?)
D. (-?, ?)
Answer: A
Mathematics
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Solve by completing the square.z2 + 16z + 45 = 0
A. -16 + 3
B. 8 + 3
, 8 - 3
C. 8 + 
D. -8 + 
, -8 - 
Mathematics
Use a calculator to evaluate the expression. Round your answer to the nearest thousandth.|2 - ?2|
A. -9.881 B. 7.87 C. 9.882 D. -7.87
Mathematics
Sketch the graph of the given equation over the interval [-2?, 2?].y = 
cos 2x 
A. 
B. 
C. 
D. 
Mathematics
Insert either < or > in the blank between the pair of whole numbers to make a true statement.25 
31
A. < B. >
Mathematics