Collin states that 8+(16+9)=(8+16)+9 is always true . which of the following properties would prove collin is correct? 1# transitive property 2# associative property of multiplication 3# associative property of addition 4# commutative property of addition

3. associative property of addition.

It is associative because the multiplication properties are eliminated because you are not multiplying so the ones remaining are
Associative states: you can change the grouping of addends.
Commutative: you can change the order of the addend
Transitive property: if a=b and b=c then a=c

The correct answer is Associative property

Letter c i’d say