10. What is the value for (2)? 2 (a) 3 (b) 9 (c) 4+9 + 16 (d) 2+ 3+4 (e) None of the above. For the next two questions let g : A B and f : B C where A-B = C-{1,2,3,4}, g t(1,4), (2,1), (3, 1), (4,2)J and f ((1,3), (2,2), (3, 4), (4,2)) 11. For what values x E A does fog(z) = 3 (a) Only = 1 and = 2 (b) Only 2 and r- 3 (c) Only 2 (d) Only 3 (e) For no values of r 12. For what values E A does go f(x) = 3 (a) Only r-2 and (b) Only z 2 (c) Only 3 (d) Only z-# 1 and (e) For no values of 3 2 For each of questions 13 through 20 determine the truth value of the specified statement and choose A if the answer is true. Choose B if the answer is false 13. The equation Iz +y|-|z+ Ly] is true for all possible integers x and y 14. The equation rz + y7 [al + 1 is true for all possible real numbers x and y. For questions 15 through 20, use the following definitions of the functions f : A B, g: AB, and h: A B, where A - B-fa,b,c, dy. f(a) b,f(b)- b,f(c)- d, f (d) c h(a) d, h(b) b, h(c)- c,h(d) d 15. f is a one-to-one function. 16. g is a one-to-one function 17. h is a one-to-one function. 18. f is an onto function 19. g is an onto function. 20. h is an onto function