Let's define the number of listens for each song in terms of the variable \( x \), which represents the number of days.
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First Song:
- Initial listens: 1,000
- New listens per day: 38
- Total listens after \( x \) days: \[ 1000 + 38x \]
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Second Song:
- Initial listens: 900
- New listens per day: 40
- Total listens after \( x \) days: \[ 900 + 40x \]
To determine when the two songs have the same number of listens, we set the equations equal to each other:
\[ 1000 + 38x = 900 + 40x \]
Now, you can solve this equation for \( x \).