For two rectangles, area For four rectangles, area Question 11 of 21 (Type an integer or a decimal.) (Type an integer or a decimal.) This test: 21 point(s) possible This question: 1 point(s) possible Using rectangles whose height is given by the value of the function at the midpoint of the rectangle's base (the midpoint rule), estimate the area under the graph of the following function, using two and then four rectangles. y = 9-x² between x = -3 and x = 3 Submit test

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