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IMAS 2020–2021 Junior Round 2 Question 2

IMAS · IMAS 2020–2021 Junior Round 2

Question 2

How many non-negative integers $x$ satisfy $|3x+2|\le20$?
  1. $6$
  2. $7$
  3. $13$
  4. $19$
  5. $20$