Solve the system by elimination. If the system is inconsistent or dependent, say so. 7x - 9y = 5-21x + 27y = -20
A. 
B. (3, 4)
C. infinite number of solutions of the equation 7x - 9y = 5; dependent system
D. empty set solution; inconsistent system
Answer: D
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Draw a tree diagram for the experiment. Then use the diagram to find the number of possible outcomes.Spin the first spinner once and the second spinner once. 
A. 16 B. 9 C. 7 D. 12
Use the Rational Zero Theorem to list all possible rational zeros for the given function.f(x) = -4x4 + 2x2 - 3x + 6
A. ± 
, ± 
, ± 
, ± 
, ± 
, ± 1, ± 2, ± 4
B. ± 
, ± 
, ± 
, ± 
, ± 1, ± 2, ± 3, ± 6
C. ± 
, ± 
, ± 
, ± 
, ± 1, ± 2, ± 3, ± 4, ± 6
D. ± 
, ± 
, ± 
, ± 
, ± 
, ± 1, ± 2, ± 3, ± 6
Divide. The answer contains fractions.
A. x2 + 
x + 
+ 
B. x2 + 
x - 
+ 
C. x2 + 
x + 
+ 
D. x2 + 
x + 
+ 
Find the zeros of f(x), given that one zero is k.f(x) = x3 - 10x2 + 37x - 52
k = 4
A. 4, 3 ± 2i
B. 4, 3 ± i
C. 4, -3 ± 2i
D. 4, 3 ± 
i