Determine whether A = B, A ? B, B ? A, A ? B, B ? A, or if none of these applies.A = {a, b} B = {z, a, y, b, x, c}
A. A ? B and A ? B
B. A ? B
C. B ? A and B ? A
D. A ? B
Answer: A
Mathematics
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A. 4i - 72j + 
k
B. 8i - 72j + 
k
C. 8i - 72j + 
k
D. 8i + 72j + 
k
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Solve the systems of equations by the addition method. 
A. {(0, -1)} B. {(0, 0)} C. no solution; ? D. {(3, -4)}
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Using the horizontal-line test, determine whether the function is one-to-one.f(x) = x3 - 2x + 1
A. Yes B. No
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Convert the units using unit fractions.36,960 ft = 
mi
A. 7.5 B. 184.8 C. 7 D. 8
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