Algebra-1

Question Analysis
This question assesses the student's ability to apply the exponential decay model to a real-world scenario. The key is to correctly identify the initial value, the decay factor, and the time period.

Key Concept Explanation
The exponential decay model  () is used to describe how quantities decrease over time. Here, is the initial value, is the decay factor, and is the time in years.

Step-by-step Solution
1. Identify the initial value:
2. Identify the decay factor:

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