Sketch the graph of the function.y = cos (-3?x)
A. 
B. 
C. 
D. 
Answer: C
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Use reduction formulas to evaluate the integral.
A. - 
cos4 5x sin 5x - 
cos2 5x sin 5x - 
cos 5x + C
B. - 
sin4 5x cos 5x - 
sin2 5x cos 5x - 
sin 10x + 
+ C
C. - 
sin4 5x cos 5x - 
sin2 5x cos 5x - 
cos 5x + C
D. - 
sin4 5x cos 5x - 
sin2 5x cos 5x - 
cos 5x + C
Solve the problem.Calculate the coordinates of the new location of the point (13, 13) when it is rotated 30° counterclockwise about the origin. Remember that it is the matrix 
that rotates a point 30° counterclockwise about the origin.
A. 
B. 
C. 
D. 
Solve the problem.Assume that the probability is 
that a child born is a boy. What is the probability that both of a family's two children are girls?
A. 
B. 
C. 
D. 
Convert the radian measure to degree measure. Use the value of ? found on a calculator and round answers to two decimal places.- 
?
A. -9.94° B. -285° C. -570° D. -1140?°