Find the domain of the function.f(x) = 
A. {x|x < 7}, or (-?, 7)
B. {x|x ? 7}, or [7, ?)
C. {x|x ? -7}, or [-7, ?)
D. {x|x < -7}, or (-?, -7)
Answer: A
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Perform the operation and write the result in standard form.
?
?
A. 
B. 
C. 
D. 
E. 
Determine whether the given function satisfies a Laplace equation.f(x, y) = cos(x) sin(-y)
A. Yes B. No
Write the first six terms of the geometric sequence with first term, a1, and common ratio, r.a1 = -6, r = -3
A. -6, 18, -54, 162, -486, 1458 B. 18, -54, 162, -486, 1458, -4374 C. -18, -54, -162, -486, -1458, -4374 D. -6, -18, -54, -162, -486, -1458
Use the given information to answer the question.Four students are running for president of the Current Events Club: Arthur (A), Brandy (B), Chandra (C), and Darrell (D). The preference ballots for the candidates are shown. Construct a preference table to illustrate the results of the voting.
A. 
B. 
C. 
D. 