Let f(:12) be a function whose graph is given below: 6 Let A = f f (x) tins, and let R4, R3, L4, and L3 be estimates of A U a. arrange A, R4, R3, L4, and L3 in order from least to greatest, using the graph to explain your answer. If you believe there is not enough information given to answer this question, state what information you would need. b. Sketch and calculate R3 and L3