#1 (2 pts) The function f is given by the graph below. y=f(x)| | ë¼-_-r- Use the graph of fto answer the following questions (a) Evaluate the integral f (x) d x. Explain. (b) Evaluate the expression. Show your work. f"(t) dt - (c) Evaluate the expression. Show your work f (t) d t dx 1 (d) In the figure above shade region whose area is given by the integralf(x)d x.