Sec2.1: Problem 9 Previous Problem Problem List Next Problem (1 point) Review Problem This problem gives you some practice identifying how more complicated functions can be built from simpler functions. Let f(a) = 13 +1 and let g(x) = x + 1. Match the functions defined below with the letters labeling their equivalent expressions. 1. f(x2 ) 2. g(x) f(x) 3. g(x2) 4. f(x)/ 9(x) A. 1+x+x3+ 24 B. 1 + 26 C. 1 - x + 22 D. 1 + x2 Note: You can earn partial credit on this