Algebra-2

Question Analysis
This problem evaluates the student's ability to apply vertical stretches to a polynomial function.

Key Concept Explanation
A vertical stretch by a factor of is represented by the transformation . For this problem, we need to stretch the function vertically by a factor of 3, which means we multiply the entire function by 3.

Step-by-step Solution
1. Start with the original function:
2. Apply the vertical stretch:

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