Question 1 • Precalculus
The denominator has degree 4, while the numerator has degree 2, so the fraction approaches 0 as x grows in either direction. Dividing the numerator and denominator by x⁴ gives (7/x² + 1/x³ + 1/x⁴)/(1 + 1/x⁴), whose limit is 0. Choice B expresses this end behavior; the function does not approach 7 or infinity.
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