Insert parentheses to make each number sentence true 42 13. 245 62 1 15 22 16. 14 6.6 0.2 0.4 25 15. 25 24 13 x 2 31
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well, the recursive rule of aₙ = aₙ₊₁ + 7, where a₁ = 15, is simply saying that
we start of at 15, and the next term is obtained by simply adding 7, and so on.
well, that's the recursive rule.
so then let's use that common difference and first term for the explicit rule.