Let U = {q, r, s, t, u, v, w, x, y, z}; A = {q, s, u, w, y}; 
and 
List the elements in the requested set.B ? ?
A. {r, t, u, v, w, x}
B. {q, s, u, w, y}, or A
C. {q, s, y, z}, or B
D. ?
Answer: D
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Multiply and simplify.(9 cot ? - 9 csc ?)(9 cot ? + 9 csc ?)
A. 9(cot2? + csc2?) B. 81 C. -81 D. 81(cot2? + csc2?)
Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination. x - 2y = 42x - 2y = 6
A. (3, -2) B. (2, -1) C. (3, 2) D. No solution
Graph the rational function.
?
?
Note that the numerator and denominator of the fraction share a common factor.
?
A. ?
B. ?
C. ?
D. ?
Use a graphing calculator to graph the function using the given viewing window. Use the graph to decide if the function is one-to-one. If the function is one-to-one, give the equation of the inverse function.f(x) = x4 - 6x2 + 5; [-3, 3] by [-40, 40]
A. One-to-one; f-1(x) = 
B. One-to-one; f-1(x) =
+ 6x2
C. One-to-one; f-1(x) = 
D. Not one-to-one