Question

Which recursive formula represents the sequence shown?

A) an = an - 1 + 5
B) an = 2an - 1 + 1
C) an = 3an - 1 - 1
D) an = 5an - 1 + 1

Answer 1

`a_n=a_(n-1)+5`

Explanation:

From the table,

`a_1=3`

The common difference is

`d=8-3=5`

This means that , we can get the subsequent term by adding 5 to the previous term.

The recursive formula is

`a_n=a_(n-1)+5`

The correct choice is A