Ryan and Mariah are playing a game. Whoever wins a round gets 7 points. Whoever loses a round gets -3 points. Mariah lost the first two rounds. How many points does Ryan have? 14 7 -3 -6

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}