The rectangles in the graph below illustrate a left endpoint Riemann sum for f(x) = (15/x) on the interval [2, 6]. The value of this left endpoint Riemann sum is , and this Riemann sum is [select an answer] area of the region enclosed by y = f(x), the x-axis, and the vertical lines x = 2 and x = 6. 3 1 y 1 2 3 4 5 6 Left endpoint Riemann sum for y = 7 8 X (15/x) on [2, 6] ✓the

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