Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle.f(x) = 2x2 + x + 3 from x = 0 to x = 6; n = 6
A. 221
B. 230
C. 211
D. 200
Answer: A
Mathematics
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A. 
B. 
C. 
D. 
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