Find the focus and the directrix of the parabola.(y + 4)2 = 12(x - 3)
A. Focus: (0, -4); directrix: x = 6
B. Focus: (6, -4) ; directrix: x = 0
C. Focus: (0, 4); directrix: x = -6
D. Focus: (-1, 3); directrix: x = -7
Answer: B
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Solve the problem.A weighted voting system has 100 players. How many sequential coalitions in which P50 is listed first are possible?
A. 
B. 50!
C. 100! - 1
D. 99!
E. none of these
Use the Binomial Theorem to expand the binomial.(x + 2)6
A. x6 + 12x5 + 60x4 + 160x3 + 240x2 + 192x + 64 B. x6 + 12x5 + 64x4 + 40x3 + 64x2 + 12x + 2 C. x6 + 12x5 + 48x4 + 144x3 + 192x2 + 192x + 64 D. x6 + 12x5 + 24x4 + 36x3 + 24x2 + 12x + 2
Evaluate the improper integral or state that it is divergent.
A. Divergent B. 42 C. 21 D. -21
Solve the problem.Construct a possibility tree that shows all possible 2-letter code words using only the letters w, x, and y with no repetitions.
A. 
B. 
C. 
D. 