1 (2 pts) The function f is given by the graph below. y=f(x): Use the graph of f to answer the following questions. (a) Evaluate the integral f' (x)dx. Explain. (b) Evaluate the expression. Show your work. | f'(t) dt - (c) Evaluate the expression. Show your work. | f(t) dt dx J1 (d) In the figure above shade region whose area is given by the integral f (x) dx