PLEASE HELP

DO NOT SCAM IM GOING THROUGH ENOUGH IVE BEEN SCAMMED SO MUCH I JUST NEED HELP

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 are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).