Express the product as a sum or difference.cos 5x cos 8x
A. cos2 28x2
B. 
(cos 13x - cos 3x)
C. 
(cos 13x - sin 3x)
D. 
(cos 3x + cos 13x)
Answer: D
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Use the preference table to answer the question.Four students are running for president of their dormitory: Debra (D), Farah (F), Jorge (J), and 
The votes of their fellow students are summarized in the following preference table.
Who is declared the new president using the Borda count method?
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Answer the following statement true (T) or false (F)
Solve the problem.An airplane flies 470 miles with the wind and 310 against the wind in the same length of time. If the speed of the wind is 20, what is the speed of the airplane in still air?
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