Question

What is the recursive formula for the sequence 20, 28, 36, 44?

Answer 1

`a_ {n} =a_ {n - 1} + 8, \: \: a_1=20`

Step-by-step explanation

The given sequence is:

`20,28,36,44,...`

The first term is

`a_1=20`

The constant difference is

`d = 28 - 20`

`d = 8`

The nth term of the sequence is given by the recursive formula,

`a_ {n} =a_ {n - 1} + 8, \: \: a_1=20`