Use a graphing calculator to estimate f '(a) for the given value of a.f(x) = tan x; a = 3
A. -0.1425
B. 1.0203
C. -1.2097
D. -2.1697
Answer: B
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Refer to the weighted voting system 
and the Banzhaf definition of power. (The five players will be called P1, P2, P3, P4, and P5.)The number of coalitions having exactly three players is
A. 20 B. 5 C. 10 D. 1 E. none of these
Solve the equation Ax = b by using the LU factorization given for A.A = 
, b = 
A = 
A. x = 
B. x = 
C. x = 
D. x = 
Write the statement as an inequality.y is positive
A. y ? 0 B. y < 0 C. y > 0 D. y ? 0
Graph the function in the ts-plane (t-axis horizontal, s-axis vertical). State the period and symmetry of the function.s = -sec 
A. Period 4?, symmetric about the s-axis
B. Period 4?, symmetric about the t-axis
C. Period 4?, symmetric about the s-axis
D. Period 4?, symmetric about the t-axis