If r◼s = 3r + s, find 4◼(2◼1).

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27 votes

By definition of ◼, we have

2 ◼ 1 = 3•2 + 1 = 7

4 ◼ (2 ◼ 1) = 4 ◼ 7 = 3•4 + 7 = 19

Guillermooo answered Jan 17, 2023

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