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tysonsean0
A recursive formula designates the starting term, a1, and the nth term of the sequence, an , as an expression containing the previous term (the term before it), an-1. The process of recursion can be thought of as climbing a ladder. plz mark me as brainiest answer 
WojtekR
We know, that [tex]a_1=2,5[/tex] and the difference is 3,5, so the recursive rule for the sequence is:

[tex]\begin{cases}a_1=2,5\\\\a_{n}=a_{n-1}+3,5\end{cases}[/tex]

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