Calculate the period of the function.f(x) = cos 13x - cos 8x

A. 104
B. 104?
C. 2?
D. 208?

Answer: C

Mathematics

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Solve the problem.Decide which of the rational functions might have the given graph. 

A. R(x) = 
B. R(x) = 
C. R(x) = 
D. R(x) = 

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Find the y-intercept.4y = 9x

A. 1
B.
C. - 
D. 0

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Perform the indicated operation and express in lowest terms. - 

A.  
B.  
C. -  
D.

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Simplify. Assume all variables and radicands represent nonnegative real numbers.

A. p
B.
C.
D.

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