(Question 1) Which mathematical property is shown by the statement?

If 43 = y, then y = 43.


A) transitive property


B) symmetric property


C) reflexive property


D) associative property of addition


(Question 2) Which mathematical property is shown by the statement?

(4y⋅9)⋅7=4y⋅(9⋅7)

associative property of addition


associative property of multiplication


commutative property of addition


commutative property of multiplication


(Question 3) Which statement is true for the set of natural numbers?


The set is closed under addition and closed under subtraction.


The set is not closed under addition and closed under subtraction.


The set is closed under addition and not closed under subtraction.


The set is not closed under addition and not closed under subtraction.