Solve the inequality. Write the solution set in interval notation.x2 - 6x - 16 > 0
A. (-?, -8) ? (2, ?)
B. (-8, 2)
C. (-2, 8)
D. (-?, -2) ? (8, ?)
Answer: D
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At one high school, the mean time for running the 100-yard dash is 
with a standard deviation of 0.9 seconds. The times are very closely approximated by a normal curve. Find the percent of times that are:Greater than 13.4 seconds
A. 84% B. 98% C. 2.5% D. 97.7%
Refer to the weighted voting system 
and the Banzhaf definition of power. (The four players are P1, P2, P3, and P4.)The Banzhaf power distribution of the weighted voting system is
A. P1: 40%; P2: 30%; P3: 20%; P4: 10%. B. P1: 37.5%; P2: 37.5%; P3: 12.5%; P4: 12.5%. C. P1: 40%; P2: 40%; P3: 10%; P4: 10%. D. P1: 25%; P2: 25%; P3: 25%; P4: 25%. E. none of these
Write the number in trigonometric form. Let 0 ? ? < 2?.-2
- 2i
A. 2
B. 4
C. 4
D. 2
Solve the problem.The time T necessary to make an enlargement of a photo negative varies directly as the area A of the enlargement. If 140 seconds are required to make a 5-by-4 enlargement, find the time required for a 
enlargement.
A. 270 sec B. 210 sec C. 240 sec D. 180 sec