Determine whether the matrix is symmetric.
A. Yes
B. No
Answer: A
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Find the area of the shaded region in the figure. Round results to the nearest unit.The hypotenuse of the smallest, unshaded triangular region has length 8.14 inches. The sides of the outer square have length 23 inches. Half the diagonal of the outer square is 16.27 inches. 
A. 226 in2 B. 353 in2 C. 166 in2 D. Not enough data
Use technology to calculate det A.A = 
A. 16 B. -56 C. -16 D. 176
Compute the determinant of the matrix by cofactor expansion.
A. -60 B. -240 C. 120 D. -120
Sketch the graph of the quadratic function. Identify the vertex and the axis of symmetry.f(x) = -4x2 + 40x - 103
A. vertex: (5, -3)
axis of symmetry: x = 5
B. vertex: (-5, -3)
axis of symmetry: x = -5
C. vertex: (-5, -3)
axis of symmetry: x = -5
D. vertex: (5, -3)
axis of symmetry: x = 5