Find the vertex of the parabola associated with the quadratic equation.y = x2 + 2x + 1
A. (1, 0)
B. (1, 1)
C. (-1, 1)
D. (-1, 0)
Answer: D
Mathematics
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Refer to the weighted voting system 
and the Banzhaf definition of power. (The four players are P1, P2, P3, and P4.)Which players in the coalition {P1, P2, P3, P4} are critical?
A. None of the players B. All four players C. P1 only D. P1 and P2 E. none of these
Mathematics
Use the properties of logarithms to find the exact value of the expression. Do not use a calculator.log5 58
A. 40 B. 1 C. 8 D. 5
Mathematics
Use properties of limits to find the indicated limit. It may be necessary to rewrite an expression before limit properties can be applied.
A. does not exist B. 16 C. 0 D. -16
Mathematics
Simplify the expression.
?
?
A. 1
B. 
C. 
D. 
E. 
Mathematics