Let a be a non-empty set and let s = p(a) be its power set. let b be a non-empty subset of a. on s, we define a relation r as r= {(a1, a2) esx sa, b = a, b} show that r is an equivalence relation. [2 marks] describe the equivalence classes of r when a = z and b = {1,2,3} [2 marks]

A)a square brown tarp has a square green patch green in the corner the side length of the tarp is (x + 8) and the side length of the patch is x what is the area of the brown part of the tarpb)a square red placemat has a gold square in the corner the side length of the gold square is (x - 2) inches with the width of the red region is 4 in what is the area of the red part of the placemat