Question

I need help! my hw says this:

The expression of 12(x+4) represents the total number of CDs Mei bought in April and May at $12 each. Which property is applied to write the equivalent expression 12x+48?

A. Associative Property of Addition
B. Associative Property of Multiplication
C. Commutative Property of Multiplication
D. Distributive Property
I know it's not D, but please help me figure out which one is correct

Answer 1

The answer is D because you have to apply the D, or distribute, the number 12 to the x and 4 to get 12x+48.