Find the product.5xy(3x - 9y)

A. 15x2 - 45y2
B. 8x2 - 14y2
C. 8x2y - 14xy2
D. 15x2y - 45xy2

Answer: D

Mathematics

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B.

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D.

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Simplify the expression. Assume that all variables are positive when they appear.

A.
B.
C.
D.  - 

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Combine like terms when possible. -2y - 6y

A. 12y B. 8y C. -8y2 D. -8y

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Write in exponential form.log7 49 = 2

A. 749 = 2 B. 492 = 7 C. 27 = 49 D. 72 = 49

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