Factor completely.12x3 + 25x2 + 12x
A. (12x2 + 3)(x + 4)
B. x(12x + 1)(x + 12)
C. x(4x - 3)(3x - 4)
D. x(4x + 3)(3x + 4)
Answer: D
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Find the area of the shaded region. y = sec2 x
A. 
B. 2 - 
C. 1 - 
D. 1 + 
Write the sentence as an equation. Let the variable x represent the number.A number minus 5 equals 5.
A. x = 5 - 5 B. x - 5 = 5 C. 5 - x = 5
Use the maximum/minimum finder on a graphing calculator to determine the approximate location of all local extrema.f(x) = x5 - 15x4 - 3x3- 172x2 + 135x - 0.037
A. Approximate local maximum at 0.379; approximate local minimum at 12.565 B. Approximate local maximum at 0.375; approximate local minimum at -12.466 C. Approximate local maximum at 0.379; approximate local minima at -0.472 and 12.565 D. Approximate local maximum at 0.298; approximate local minima at -0.525 and -12.578
Solve the problem.The number of mosquitoes M(x), in millions, in a certain area depends on the June rainfall x, in inches: 
What rainfall produces the maximum number of mosquitoes?
A. 64 in. B. 0 in. C. 8 in. D. 4 in.