Evaluate the expression.

A. 8
B. 19
C. 45
D. 90

Answer: D

Mathematics

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A. - , -  
B. 5, 
C. , -  
D. - ,  

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Multiply.9(-4)(-4)

A. -72 B. 144 C. 154 D. -144

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Simplify.

A. 12x
B.
C.
D. 6x

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Find the indicated vector.Let u = . Find 2u.

A.
B.
C.
D.

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