[10 points] name the algebraic property demonstrated in the example below:
(2 + x) + y = 2 + (x + y)

a. commutative property of addition
b. associative property of addition
c. distributive property
d. transitive property

The associative property states that you can add or multiply regardless of how the numbers are grouped. By 'grouped' I mean 'how you use parenthesis'.

In other words, if you are adding or multiplying it does not matter where you put the parenthesis. 

Hence, the answer is B.

2.) is the most sense