Asnail climbed up 15.2 centimeters, fell 6.8 centimeters, and then climbed down 4.4 centimeter. you calculate the change in the snail's position. how can you check if your answer is reasonable?

Let u = {q, r, s, t, u, v, w, x, y, z} a = {q, s, u, w, y} b = {q, s, y, z} c = {v, w, x, y, z}. list the elements in the set.a ∩ (b ∪ c)a) {q, s, w, y}b) {q, y, z}c) {q, s, u, w, y, z}d) {q, r, w, y, z}