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.
-$$f ( x ) = x ^ { 2 } - 3 x + 4 \text { from } x = 1 \text { to } x = 5 ; n = 4$$
A) 18
B) 38
C) 28
D) 48

Question

Quizplus · Accepted Answer

The interval from x = 1 to x = 5 is divided into 4 rectangles, each with a width of 1. The heights are determined by the function values at x = 2, 3, 4, and 5. Calculating these values and summing the areas gives approximately 28.

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