Algebra-1

Question Analysis
This question tests the ability to evaluate a step function at a specific point by identifying the correct interval.

Key Concept Explanation
A step function has different constant values on different intervals. To find , determine which interval falls into and use the corresponding constant value.

Step-by-step Solution
1. Identify the value of : .
2. Determine the interval that 4 falls into: .
3. The value of the function in this interval is 5.
4. Therefore,

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