Mathematics, 11.06.2020 16:57, lydia309

In a 4-H group, a phone tree is used to contact each member's family for special events. In the first round, the leader calls 3 families. In the second round, each of those families calls 3 other families. Which expression
represents the number of families called during the third round of calls?

Answers: 2

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In a 4-H group, a phone tree is used to contact each member's family for special events. In the firs...