Solve the linear system using an inverse matrix.
A. (2, 3)
B. (-3, -2)
C. (-2, -3)
D. (3, 2)
Answer: D
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Find all local extreme values of the given function and identify each as a local maximum, local minimum, or saddle point.
A. 
local maximum; 
local minimum
B. 
saddle point; 
saddle point
C. 
local minimum; 
saddle point; 
saddle point; 
local maximum
D. 
local maximum
Find the perimeter of the polygon.
A. 23.8 m B. 24.8 m C. 32.4 m D. 16.2 m
Rationalize the denominator. Assume that all variables represent positive real numbers and that the denominator is not zero.
A. 
B. 
C. 
D. 
Find all of the real and imaginary roots, stating the multiplicity of each.x4 - 20x2 + 64 = 0
A. 16 with multiplicity 2 4 with multiplicity 2 B. 16 with multiplicity 2 2 with multiplicity 1 C. 16 with multiplicity 1 4 with multiplicity 1 D. -4 with multiplicity 1 4 with multiplicity 1 -2 with multiplicity 1 2 with multiplicity 1