Question

Write a recursive rule for this sequence:
4, 6, 9, 13, 18...

Answer 1

First add 3.
Then add 4.
Then 5.
Then 6.

Answer 2

\[a_n = a_{n - 1}+ n\]The formula will look like this.

Answer 3

Because for the second term, we are adding 2 to the previous term.
For the third term, we are adding 3 to the previous term.
Etc.

Answer 4

yeah i got :) !!

Answer 5

You're welcome!