Trigonometry: Sides and Angles Escape Room!!(level3) please help my brain won’t work w me)

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take

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

The sum of 5consecutive even numbers is 100. what is the first number in this sequence?