please help with answering this question asap!

14. Let f: R R be defined by f(x) = x2. For each of the following subsets B of R, find f-1(B). a) B = {0, 1} c) B= [0, 1] e) B = [0,4] b) B = {-1,0,1} d) B = [0, 1) f) B = (0, 1] U (4,9)