Algebra-1

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

Key Concept Explanation
Exponential decay occurs when a quantity decreases by a constant factor over equal intervals of time. The formula  () represents this, where is the initial value, is the decay factor, and is the number of time intervals.

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

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