Simplify.sin(2x + 7y) + sin(2x - 7y)
A. sin 2x cos 14y
B. sin 4x cos 7y
C. 2 sin 2x cos 7y
D. 2 sin 7y cos 2x
Answer: C
Mathematics
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Sketch the line.-4x + 12y - 20 = 0
A. 
B. 
C. 
D. 
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Use the limit comparison test to determine if the series converges or diverges.
A. converges B. Diverges
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Simplify the complex fraction by simplifying the numerator and denominator separately. 
A. 
B. 
C. 
D. 
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Perform the indicated operation.- 
+ 
A. -5 B. 5 C. 7 D. -7
Mathematics