Factor completely.x4 + 9x2 + 14
A. (x2 - 2)(x2 + 7)
B. prime
C. (x2 + 2)(x2 + 7)
D. (x2 - 2)(x2 + 1)
Answer: C
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All references are to the figure below. The distance between A and D is a, and the distance between D and C is x. 
Assuming that A = 15°, ?DBC = 27°, and a = 9, find h and x.
A. h ? 3, x ? 1 B. h ? 2.8, x ? 1.4 C. h ? 5, x ? 10 D. h ? 5.1, x ? 10.
Determine the constant that should be added to the binomial so that it becomes a perfect square trinomial. Then write and factor the trinomial.x2 - 12x
A. 144; x2 - 12x + 144 = (x - 12) 2 B. 36; x2 - 12x + 36 = (x - 6) 2 C. -144; x2 - 12x - 144 = (x - 12) 2 D. -36; x2 - 12x - 36 = (x - 6) 2
Solve the problem.A wheel is rotating at 3 radians/sec, and the wheel has a 70-inch diameter. To the nearest foot per minute, what is the velocity of a point on the rim?
A. 515 ft/min B. 525 ft/min C. 530 ft/min D. 520 ft/min
Determine whether the graph of the equation is symmetric with respect to the x-axis, the y-axis, and/or the origin.y2 - x - 9 = 0
A. x-axis B. origin C. y-axis D. x-axis, y-axis, origin E. none