2 :c {1 point) The rectangles in the graph below illustrate a left endpoint Riemann sum for Hm) = E on the interval [2,6]. The value of this left endpoint Riemann sum is , and this Riemann sum is [select an answer] v the area of the region enclosed by y = at}: the xaxis, and the vertical lines x = 2 and x = 6. Lel'c endpoint Riemann sum for y = Ti on [2,6] 2 a: The rectangles in the graph below illustrate a right endpoint Riemann sum for at) = E on the interval [2, 6]. The value of this right endpoint Riemann sum is __ and this Riemann sum is [select an answer] v the area ofthe region enclosed by y = at}: the xaxis, and the vertical lines x = 2 and x = 6. 1 2 3 4 5 B 7 B Right endpoint Riemann sum fory = f: on [2, 6]