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The graph of the function f is given. 6 y = f( x) 4 N X 0 2 6 8 10 12 (a) Use six rectangles to find estimates of each type for the area under the given graph of f, the x-axis, and the lines x = 0 and x = 12. (i) 46 (sample points are left endpoints) L6 = 1368 (ii) R6 (sample points are right endpoints) R6 = (iii) Mo (sample points are midpoints) M6 = (b) Is L6 an underestimate or overestimate of the true area? O overestimate O underestimate (c) Is Ro an underestimate or overestimate of the true area? O overestimate O underestimate (d) Which of the numbers L6, R6, or Mo gives the best estimate of the true area? O L6 OR6 OMG