Simplify.log2 22x
A. 2x
B. 2
C. 22x
D. 2log22x
Answer: A
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Factor completely. If unfactorable, indicate that the polynomial is prime.49x2 - 64
A. (7x + 8)(7x - 8) B. (7x + 8)2 C. (7x - 8)2 D. prime
Express the number in scientific notation.870,000
A. 8.7 × 105 B. 8.7 × 104 C. 8.7 × 10-4 D. 8.7 × 10-5
Identify the vertex, the equation of the axis of symmetry, and the x- and y-intercepts of the graph. Then graph.f(x) = x2 + 5x + 4
A. Vertex: 
;
axis of symmetry: x = - 
;
x-intercepts: (1, 0), (4, 0);
y-intercept: (0, 4)
B. Vertex: 
;
axis of symmetry: x = 
;
x-intercepts: (-1, 0), (-4, 0);
y-intercept: (0, 4)
C. Vertex: 
;
axis of symmetry: x = 
;
x-intercepts: (1, 0), (4, 0);
y-intercept: (0, 4)
D. Vertex: 
;
axis of symmetry: x = - 
;
x-intercepts: (-1, 0), (-4, 0);
y-intercept: (0, 4)
Solve the compound inequality. Write your answer in interval notation or state that there is no solution.1 - 3x ? 7 or 7x + 3 ? -25
A. [-2, ?) B. (-?, ?) C. (-?, -4) ? (-2, ?) D. (-?, -4] ? [-2, ?)