Factor out the GCF from the polynomial.21y3 - 9y2 + 15y
A. 3y(7y3 - 3y2 + 5y)
B. y(21y2 - 9y + 15)
C. 3y(7y2 - 3y + 5)
D. 3(7y3 - 3y2 + 5y)
Answer: C
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Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation.-5x + 3y = 83x - 6y = -30
A. (6, 2) B. (-2, -6) C. (2, 6) D. (-6, -2)
Solve the problem.A fair coin is tossed 6 times and heads or tails is noted on each toss. How many different outcomes are there in the sample space?
A. 2 B. 64 C. 36 D. 12 E. none of these
Solve the problem.A pair of six-sided dice are rolled. The observation is the number that comes up on each die. The event described by E: "both dice come up with the same parity" (i.e., both numbers rolled are even or both numbers rolled are odd) is
A. {(1, 1), (1, 3), (1, 5), (3, 1), (3, 3), (3, 5), (5, 1), (5, 3), (5, 5)}.
B. {(1, 3), (1, 5), (2, 4), (2, 6), (3, 1), (3, 5), (4, 2), (4, 6), (5, 1), (5, 3), (6, 2), (6, 4)}.
C. {(1, 1), (1, 3), (1, 5), (2, 2), (2, 4), (2, 6), (3, 1), (3, 3), (3, 5), (4, 2), (4, 4), (4, 6), (5, 1), (5, 3), (5, 5), (6, 2), 
(6, 6)}.
D. {(2, 2), (2, 4), (2, 6), (4, 2), (4, 4), (4, 6), (6, 2), (6, 4), (6, 6)}.
E. none of these
Graph the function. Give the domain and range.f(x) = log1/4 (1-x)
A. domain: (-?, 1); range: (-?, ?)
B. domain: (-1, ?); range: (-?, ?)
C. domain: (-?, 1); range: (-?, ?)
D. domain: (-1, ?); range: (-?, ?)