Find an approximation of the area of the region R under the graph of the function f on the interval [a, b]. Use n subintervals and choose the representative points as indicated. Please round your answer to two decimal places.
?
; 
; 
; midpoints
?
A. 182.27 sq units
B. 308.77 sq units
C. 562.61 sq units
D. 416.79 sq units
E. 385.87 sq units
Answer: D
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