Question

Write a recursive rule for an= Зn — 6.

Answer 1

Explicit formula: a(n)=3n-6

Recursive formula: a(n)=-3+(n-1)3 <--

Explanation:

a(n)=3n-6 where a(1)=3(1)-6=-3 and d=3

Plug values into recursive formula:

a(n)=a1+(n-1)d

a(n)=-3+(n-1)3