What is the volume of the rectangular prism?

128 m 3
288 m 3
64 m 3
256 m 3

Ineed to learn how to solve this problem

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

Pls! does anybody know a shortcut for answering these types of questions in the future?