Tell me if you need the graphs on the side enlarged.

(1 point) Suppose f(x) = $2 12 (a) The rectangles in the graph on the left illustrate a left endpoint Riemann sum for f(x) on the interval 3 5 x S 5. The value of this left endpoint Riemann sum is , and it is an Right underestimate of the area of the region enclosed by y = f(x), the x-axis, and the vertical lines x = 3 Left endpoint endpoint and x = 5. Riemann sum Riemann sum (b) The rectangles in the graph on the right illustrate a right endpoint Riemann sum for f(x) on the interval 3 5 x S 5. The value of this right endpoint Riemann sum is , and it is an overestimate of |the area of the region enclosed by y = f(x), the x-axis, and the vertical lines x = 3 and x = 5