Somebody please spot me rq, the questions are in the picture. I’ll give you brainliest.

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

What is the perimeter of square abcd? units units 28 units 37 units

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?