Please help me im gonna fail this quiz giving branliest for the correct answer

What is the value of x? enter your answer in the box. (cm)

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

Each equation given below describes a parabola. which statement best compares their graphs? x = 2y^2 x = 8y^2