Suppose S4 is the upper sum of the area enclosed by the graph the x-axis, and the lines x = 0 and x = 4 by partitioning [0, 4] into four subintervals [0, 1], [1, 2], [2, 3], and [3, 4]. Then S4 is
A) 26
B) 28
C) 32
D) 48
E) 60
Correct Answer:
Verified
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