Determine the amplitude or period as requested.Period of y =  cos x

A.
B.
C.
D.

Answer: A

Mathematics

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Estimate the magnitude of the error involved in using the sum of the first four terms to approximate the sum of the entire series., -1 < t ? 1

A.  < 
B.  < 0.20
C.  < 
D.  < 

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Mathematics

Subtract and simplify. Write the answer as a mixed number if possible.19 - 2

A. 16
B. 16
C. 16
D. 17

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Mathematics

Find the function value.Let f(x) = e3x. Find f(-0.50), rounded to four decimal places.

A. 0.3502 B. -0.2231 C. 0.2231 D. -0.3502

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Mathematics

Multiply.(-3)(-8)(0)(9)

A. -216 B. 0 C. -72 D. 216

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Mathematics