Factor completely.27c3 + 343
A. (3c + 7)(9c2 + 49)
B. (3c - 7)(9c2 + 21c + 49)
C. (27c + 7)(c2 - 21c + 49)
D. (3c + 7)(9c2 - 21c + 49)
Answer: D
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Fill in the blank with one of the words or phrases listed below. Not all the choices will be used.
The 
of 25 is 5.
A. conjugate B. radicand C. radical D. principal square root
Simplify. 63 ÷ 12 - 9
A. 8 B. 9 C. 72 D. 213
Use a graphing calculator to find the vertex and intercepts for the equation. If your answers are not exact, round to the nearest tenth.y = x2 - 5x + 5.45
A. x-intercepts: (1.6, 0) and (3.4, 0); y-intercept: (0, -5.45); Vertex: (2.5, -0.8) B. x-intercepts: (1.6, 0) and (3.4, 0); y-intercept: (0, 5.45); Vertex: (2.5, -0.8) C. x-intercepts: none; y-intercept: (0, 5.45); Vertex: (2.5, -0.8) D. x-intercepts: (1.6, 0) and (3.4, 0); y-intercept: (0, 5.45); Vertex: (-5, 5.5)
Solve.Four times the sum of some number plus 2 is equal to 8 times the number minus 28.
A. -36 B. 9 C. 36 D. -9