Find the domain of the function.f(x) = log1/2(x + 4)
A. (-?, -4)
B. (4, ?)
C. (-?, 4)
D. (-4, ?)
Answer: D
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Using the Divergence Theorem, find the outward flux of F across the boundary of the region D.F = xyi + y2j - 2yzk ; D: the solid wedge cut from the first quadrant by the plane 
and the parabolic cylinder x = 9 - 4y2
A. 
B. 
C. 
D. 
Find the first term and the common ratio of the geometric sequence.an = 10n-1
A. a1 = -1, r = 
B. a1 = 1, r = 10
C. a1 = 10, r = -10
D. a1 = 0, r = 10n-1
Find the vertex and focus of the parabola.
A. vertex: 
focus: 
B. vertex: (0, 0) focus: 
C. vertex: (0, 0) focus: 
D. vertex: (0, 0) focus: 
E. vertex: 
focus: 
List the first n terms of the geometric sequence satisfying the given conditions.a1 = 8, r = 
, n = 4
A. 8, 24, 72, 216
B. 
, 
, 
, 
C. 8, 
, 
, 
D. 8, 
, 
, 9