The x y coordinate plane is given. The graph of the curve f(x) goes down and right becoming more steep, going through the following approximate points.

• (0, 27)
• (3, 26.7)
• (6, 26.4)
• (9, 25.5)
• (12, 24.6)
• (15, 23.4)
• (18, 21.9)
• (21, 19.8)
• (24, 17.7)
• (27, 15.3)
• (30, 12.3)
• (33, 8.4)
• (36, 3)
  

The graph of the function fis given. y 24 18 y = f(x) 12 6 0 6 12 18 24 36 X (a) Use six rectangles to find estimates of each type for the area under the given graph of f, the x-axis, and the lines x = 0 and x = 36. (i) L6 (sample points are left endpoints) L6 = X (ii) R (sample points are right endpoints) R6 = X (iii) Me (sample points are midpoints) ME = X