Identify where f is increasing and where f is decreasing.f(x) = 
A. increasing: (-?, 4]; decreasing: [4, ?)
B. increasing: (-?, -4]; decreasing: [-4, ?)
C. increasing: [4, ?); decreasing: (-?, 4]
D. increasing: [-4, ?); decreasing: (-?, -4]
Answer: D
Mathematics
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Construct a truth table for the statement.~(s ? t) ? ~(t ? s)
A. 
| T | T | F |
F T T
F F F
B.
| T | T | F |
F T F
F F T
C.
| T | T | F |
F T F
F F F
D.
| T | T | F |
F T T
F F F
Mathematics
Evaluate.4!
A. 24 B. 6 C. 48 D. 12
Mathematics
Find the nth term an of the geometric sequence.8, 24, 72, 216, 648, . . .
A. an = a1 + 3n B. an = (8)(3)n-1 C. an = (8)(3)n D. an = (8)(3n)
Mathematics
Calculate.
A. -20
B. 
C. 20
D. 8
Mathematics