Choose the One Alternative That Best Completes the Statement or Answers

question 112

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
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.
- $$f ( x ) = x ^ { 2 } + 2 \text { from } x = 1 \text { to } x = 4 ; n = 6$$

• A) \(24.875\)
• B) \(26.875\)
• C) \(30.875\)
• D) \(28.875\)

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Definitions:

Proximal Tubule

The portion of the nephron in the kidney that processes filtrate from the glomerulus, involved in reabsorption and secretion.

Vasa Recta

A series of straight capillaries in the kidney that serve as counter-current exchangers, playing a key role in the concentration of urine.

Juxtaglomerular Apparatus

A structure in the kidney that helps regulate blood pressure by secreting renin in response to blood pressure changes.

Macula Densa Cells

Specialized cells located in the distal convoluted tubule of the kidney that help regulate blood pressure and filtration rate.