Question

Find a formula for the nth term

of the arithmetic sequence.
First term 1
Common difference 4

Answer 1

`a_n=4n-3`

Explanation:

`a_n=a_1+(n-1)d`

`a_n=1+(n-1)4`

`a_n=1+4n-4`

`a_n=4n+1-4`

`a_n=4n-3`