Use the indicated property to provide a new expression equal to the given expression. -7x; commutative law for multiplication

A. x(-7)
B. x(7)
C. 7x
D. x - 7

Answer: A

Mathematics

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A. y = 2x + 1
B. y = -2x +  + 1
C. y = -2x + 
D. y = 2x -  + 1

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A. -  ± 
B.  ± 
C.  ± 
D. -  ± 

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Factor completely. If the polynomial is prime, state so.7r3 - 189

A. 7(r - 3)(r2 - 3r + 9) B. 7(r - 21)(r2 + 21r + 63) C. 7(r - 3)(r2 + 3r + 9) D. 7(r + 3)(r2 - 3r + 9)

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Solve the problem.Find the number of ways to arrange the letters in LOOK.

A. 16 B. 12 C. 24 D. 4

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