6+ x is an example of a. a variable b. an expression c. a constant d. a formula exsplain how you got the answer and ill give you !

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}

What is the best estimate of the length of a football

The answer is 7.2 how would you put this as money