PLEASE ASWER ALL QUESTIONS::::

-22 The rectangles in the graph below illustrate a left endpoint Riemann sum for f(ac) =- 4 + 2x 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 = f(a), the x-axis, and the vertical lines x = 2 and x = 6. X Left endpoint Riemann sum for y = = + 2x on [2, 6]- 2 2 The rectangles in the graph below illustrate a right endpoint Riemann sum for f(a) = 4 + 2x 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 of the region enclosed by y = f(a), the x-axis, and the vertical lines x = 2 and x = 6. y Ta -1 X 9 Right endpoint Riemann sum for y = = + 2x on [2, 6]