Find the sum Sn of the first n terms of the geometric sequence. 
, 
, 
, . . . ; n = 5
A. 
B. 
C. 
D. 227
Answer: B
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Solve the problem.Which of the following is not a possible Shapley-Shubik power index for a player in a weighted voting system with four players?
A. 
B. 
C. 
D. 
E. none of these
Find the domain of the composite function f?g.f(x) = x + 6,g(x) = 
A. (-?, -7) or (-7, ?) B. (-?, -7) or (-7, -6) or (-6, ?) C. (-?, -13) or (-13, ?) D. (-?, ?)
Solve the system of equations by elimination.
A. (-3, 1) B. (1, -3) C. infinitely many solutions D. no solution
Use the graph to determine the domain and range of the function. 
A. domain: all real numbers range: all real numbers B. domain: {x|x ? -3, x ? 3} range: {y|y ? 0 or y ? 1} C. domain: {x|x ? 0 or x > 1} range: {y|y ? -3, y ? 3} D. domain: {x|x ? -3, x ? 3} range: {y|y ? 0 or y > 1}