Perform the division.
A. z2 - 3z + 9
B. z2 + 3z + 9
C. z2 + 3z - 9
D. z2 + 6z + 9
Answer: B
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Simplify the difference quotients 
and 
for the following function. Rationalize the numerator when necessary.f(x) = 5x + 3
A. 5; 5x - 5a B. 5x - 5h; 5x - 5a C. 5h; 5a D. 5; 5
For an election with four candidates (A, B, C, and D) we have the following preference schedule:
Using the method of pairwise comparisons, which candidate wins the election?
A. A B. B C. C D. D E. none of these
Use the graph of a power function and transformations to sketch the graph of the polynomial function.f(x) = -2x4
A. 
B. 
C. 
D. 
The loudness of a sound of intensity x, measured in watts per square meter, is defined as L(x) = log (
), where xo = 10-3.A company with loud machinery needs to cut its sound intensity to 26% of its original level. By how many decibels should the loudness be reduced?
A. 5.760 decibels B. 6.880 decibels C. 5.850 decibels D. 6.237 decibels