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CLEP Precalculus Quiz 2

Question 1:
What are the amplitude and period of the function:
f(x) = 2 + 12cos(10x)cos(9) - 12sin(10x)sin(9)?

Question 2:
cos(38¶/3) =

Question 3:

What are the vertical and horizontal asymptotes of f(x)?

Question 4:

Which of the following functions can be represented by the graph shown above?

Question 5:
log4x + log4(x-1) = 1/2
The solutions of the equation above are: