3+(8+7) = (7+8)+3

which property is it?
asocciative
distributive
communiative
identity

answer, i'm desperate. you don't have to explain - i just need the answer. and only answer if you're sure.

Determine the domain and range of the given function. the domain is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}. the range is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}.