8. f ( x ) = Vx-5 2 of 2 Vx +9 10. f (t) = t-1 11. g(x) =V7-3x 12. g (x) = - Vx 2x + x-1 13. g (x) = V2+x 3-x 14. g (x)= 2+2 x2 15. h(t) = \\|-1 16. k (u) = Ju 17. k(x) = /x/+Vx-1 18. h (x ) = \\(x+1) 19. gu) = _Vx-1 20. h(x) =V x 2 - 1 21. f ( t ) = V-t 22. f (x ) = V-x+2 x+1