Let U = {q, r, s, t, u, v, w, x, y, z}, A = {q, s, u, w, y}, B = {q, s, y, z}, and C = {v, w, x, y, z}. List the elements in the following set.
A. {t, v, x}
B. {r, t, u, v, w, x, z}
C. {q, s, t, u, v, w, x, y}
D. {s, u, w}
Answer: B
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Simplify using the order of operations.-
+ 40 ÷ (7 - (-3)) - 43
A. -125
B. -89
C. - 
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? 
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