HELP IM TIMED PLEASE I HAVE 2 MINS LEFT HELP ME PLEASE

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

What is the missing statement in step 4? ? rts ? ? vtu and ? rtu ? ? vts ? rts ? ? rvs and ? rtu ? ? stv ? vrs ? ? vru and ? usr ? ? usv ? vur ? ? vus and ? uvs ? ? sru

Square a has a side length of (2x-7) and square b has a side length of (-4x+18). how much bigger is the perimeter of square b than square a?and show all work! you so