Algebra-1

Question Analysis
This question tests the understanding of the domain of a piecewise function. The domain is the set of all possible input values (x-values) for which the function is defined.

Key Concept Explanation
The domain of a piecewise function is the union of the domains of its individual pieces. In this case, the function is defined for all real numbers.

Step-by-step Solution
1. Identify the intervals for each piece of the function.
2. The first piece, , is defined for .
3. The second piece,

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