Determine where the given function is increasing and where it is decreasing. f(x) = x4 - 32x2 - 3
A. Decreasing on (-?, -4] and [4, ?), increasing on [-4, 4]
B. Decreasing on (-?, -4] and [0, 4], increasing on [-4, 0] and [4, ?)
C. Increasing on (-?, -4] and [0, 4], decreasing on [-4, 0] and [4, ?)
D. Increasing on (-?, -4] and [4, ?), decreasing on [-4, 4]
Answer: B
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Reduce the fraction by finding a common factor in the numerator and in the denominator and dividing by the common factor.
A. 
B. 
C. 
D. 
Use the change of base rule to find the logarithm to four decimal places.log2.8 154
A. 0.2044 B. 2.1875 C. 55.0000 D. 4.8921
Determine whether the given equation is an identity.4x - (6 - x) + 5x + 6 = 10x + 4
A. Yes B. No
Solve the system by the substitution method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(-6, 0)} B. {(-5, -6)} C. no solution; ? D. {(6, -1)}