a Find f x for the indicated values of x if possible b Find the domain of f Use words or inequalities to describe the domain 49 f x x for x 2 5 50 f x 2x 1 for x 8 1 51 f x x 3xforx 3 2 52 f x 5 x 2x for x 1 5 53 f x 12 3xl for x 1 4 54 f x 15x 3 for x 3 0 55 f x 2x for x 3 5 56 f x 2 xfor x 2 2 57 f x x for x 1 a 1 58 f x 1 x for x 2 a 2 59 f x 6 3x for x 1 a 1 60 f x 7 for x 6 a 1 3x 5 61 f x for x 1 a x 5