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A music festival welcomes \(100,000\) festival-goers in 2020. The organizing team predicts that each year, \(80\pourcent\) of the people who attended the previous year will return, and there will be \(30,000\) new festival-goers.
  1. How many festival-goers does the organization expect in 2021?
  2. Model the situation using a sequence.

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