Rationalize the denominator. Assume that all variables represent positive real numbers.- 
A. - 
B. -12
C. - 
D. -5
Answer: A
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Sketch the graph of the quadratic function. Identify the vertex and the axis of symmetry.f(x) = -3x2 + 6x - 5
A. vertex: (-1, -2)
axis of symmetry: x = -1
B. vertex: (-1, -2)
axis of symmetry: x = -1
C. vertex: (1, -2)
axis of symmetry: x = 1
D. vertex: (1, -2)
axis of symmetry: x = 1
Divide. Write the answer in lowest terms and as a whole or mixed number where possible.8 ÷ 
A. 6
B. 
C. 2
D. 10
Solve the inequality. Other than ?, graph the solution set on a number line.-5x ? 45
A. [9, ?)
B. [-9, ?)
C. (-?, -9]
D. (-?, 9]
Solve the system of equations using Cramer's Rule if it is applicable. If Cramer's Rule is not applicable, say so.
A. x = 1, y = 3, z = 1; (1, 3, 1) B. x = 8, y = -1, z = -3; (8, -1, -3) C. x = 9, y = -1, z = 3; (9, -1, 3) D. x = 8, y = 1, z = 3; (8, 1, 3)