Please I need simple answers

a) Suppose f : R - Z, where f (x) - x += i. Graph the function f(x). ii. If A = {x: 1 = x = 3}, find f(A). iii. Find f ((0)) iv. Find f ({-1,0,1}) b) Let the functions f, g and h be defined as follows: f : R - R ; f(x) = 4x-3 g: R - R ; g(x) = x2+1 (1 if x 2 0 h: R - R ; h(x) = 10 if x