Factor the polynomial completely.z4 - z3 - z + 1
A. z4 - z3 - z + 1
B. z3(z - 1) - (z - 1)
C. z(z3 - 1) - (z3 - 1)
D. (z - 1)2(z2 + z + 1)
Answer: D
Mathematics
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MonthWhat were the total sales for 2009?
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Use a graphing calculator to graph the parabola.2.3(y - 0.4)2 = 0.1(x + 3.9)
A. y = 0.4 ± 
B. y = 0.4 ± 
C. y = -0.4 ± 
D. y = -0.4 ± 
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Find the domain of the given function.f(x) = 
A. [-3, ?)
B. (3, ?)
C. (- 
, ?)
D. [
, ?)
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Solve the problem.A musician plans to perform 4 selections. In how many ways can she arrange the musical selections?
A. 16 B. 32 C. 12 D. 24
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