Express the given quantity in terms of sin x or cos x.cos (3? + x)
A. cos x
B. -sin x
C. -cos x
D. sin x - cos x
Answer: C
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Refer to the figure to classify the statement as true or false.
and 
are coplanar lines.
A. True B. False
Factor the expression completely. If the polynomial is prime, state this as your answer.49a2b4 - 
c8
A. 
2
B. 
C. 
2
D. prime
Solve the triangle using the labels as shown in the illustration (round lengths of sides to three significant digits and angles to the nearest tenth of a degree).
°, 
°, c = 41.7 cm
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A. a = 30.1 cm, b = 16.7 cm, 
°
B. a = 16.7 cm, b = 30.1 cm, 
°
C. a = 30.1 cm, b = 16.7 cm, 
°
D. a = 16.7 cm, b = 30.1 cm, 
°
E. a = 16.7 cm, b = 30.1 cm, 
°
Factor out the GCF from the polynomial.18y3 - 4y2 + 8y
A. 2(9y3 - 2y2 + 4y) B. 2y(9y3 - 2y2 + 4y) C. 2y(9y2 - 2y + 4) D. y(18y2 - 4y + 8)