Someone please help this is due in 11 minutes i will mark u as brainliest just pleaseee​

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

In the 30-60-90 triangle below side s has a length of and side r has a length

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.