5. What is the domain of this set? A. p, q, r, s, t, u) B. {p.q,r,st) C. (a, b,,d,e.fo 6. What is the range of this set? A. a,b,c,d,e, s B. {p.q, r, s, t, u, v) C. (p.q.rs.tu) For items 7-12, consider g(x) and f(x). Given f(x) = 4x2 - 9 and g(x) = 2x + 3. Find each of the following functions. 7. 8. Solve for (f + g) (). A. 4x2 - 2x - 6 B. 4x2 - 2x + 6 C. 4x2 + 2x + 6 Solve for (f + g)(x). A. 4x2 - 2x - 12 B. 4x2 - 2x + 12 C. 4x2 + 2x - 12 Solve for (f.g) (x). A. 8x3 - 12x2 - 18x-27 B. 8x3 + 12x2 - 18x - 27 C. 8x + 12x2 + 18x- 9. 10. Solve for (a) (x) A. 3x + 2 B. 3x-2 C. 2x - 3 11. Solve for (f ºg)(x). A. 16x2 + 48x + 27 B. 16x2 + 48x - 27 C. 16x2 - 48x + 27 12. Solve for (gºf)(x). A. 8x2 + 21 B. 8x2-21 13. Given the functions f(x) = 2x + 3, find f(x) = 15. C. 8x2 + 15answer ​