Find the area of the region bounded by the line , the x-axis, and the ordinates and .
Model Answer & Options
Source: Extra Practice10 sq units
6 sq units
14 sq units
8 sq units
Explanation
The area is given by the integral . Integrating term by term: and . Thus, we have . Substituting the upper limit : . Substituting the lower limit : . The area is sq units. Geometrically, this is a trapezoid with height 2 and parallel sides of lengths 3 and 7 (). Options 2, 3, and 4 are results of common arithmetic mistakes in integration or substitution.
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