Find the intervals over which the given function is increasing, is decreasing, or is constant.f(x) = 3x2 - 1
A. decreasing on (-?, 0); increasing on (0, ?)
B. decreasing on (-?, -1/3)
C. increasing on (-1/3, ?)
D. increasing on (-?, 0); decreasing on (0, ?)
Answer: A
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Find all specified roots.Fourth roots of -16
A. 
+ 
i, 
- 
i, - 
+ 
i, - 
- 
i
B. 2 + i, 2 - i, -2 + i, -2 - i
C. 1 + i, 1 - i, -1 + i, -1 - i
D. 8
+ 8
i, 8
- 8
i, -8
+ 8
i, -8
- 8
i
Write as a percent.0.5
A. 0.5% B. 500% C. 0.05% D. 50%
Refer to the weighted voting system 
and the Shapley-Shubik definition of power. (The five players will be called P1, P2, P3, P4, and P5.)If player P5 is pivotal in a sequential coalition, which player does not appear before P5?
A. P1 B. P5 is never pivotal C. P2 D. P3 E. P4
Solve the problem.If the density of a substance is 1.17 × 10-6 tons per cubic foot, what would be the mass of 3.51 × 10-6 cubic feet of this substance. (Use the formula D = 
and round to the nearest hundredth, if necessary.)
A. 0.41 × 10-12 tons B. 4.11 × 10-13 tons C. 4.11 × 10-11 tons D. 4.11 × 10-12 tons