Question

Someone please help I really don't get these . . . .
Use the commutative property to finish the equation: -8x • 7y =
A. -56xy
B. 7y · (-8x)
C. 1xy
D. -1xy
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Use the commutative property to finish the equation: - 3y2 + 5y =
A. -5y + 3y2
B. 2y3
C. -15y3
D. 5y - 3y2
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According to the commutative property, 3x2 + 5y3 is equal to:
A. 15x2y3
B. 8x2y3
C. 3y3 + 5x2
D. 5y3 + 3x2
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According to the commutative property, 7x - 10y is equal to:
A. 10y - 7x
B. -10y + 7x
C. 10x - 7y
D. -3xy
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Answer 1

Well, I don't really know how the answer is affected by the commutative property in the first question but normally it would be -56xy

Answer 2

B. 7y · (-8x)

D. 5y - 3y2

D. 5y3 + 3x2

B. -10y + 7x