Algebra-1

Question Analysis
This question tests the understanding of how to determine the range of a quadratic function given in vertex form.

Key Concept Explanation
The range of a quadratic function depends on the vertex’s -coordinate ( ) and the sign of . If a < 0 (parabola opens downward), the vertex is the maximum point, so the range includes all -values less than or equal to , expressed as .

Step-by-step Solution
1. Identify the given quadratic function:

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