Josh invest $500 for 5 years compounded annually at rate of 6% how much interest would she earn on her investment.

Can some one me with these questions

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 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}