Question

Find the nth term  of the following sequence
-7 ,-4   , -1  ,  2  ,5​

Answer 1

3n - 10

Explanation:

Find the difference between the terms

-7 , -4 , -1, 2, 5

+3 +3 +3 +3

Difference of terms = 3, so you'd write that as 3n

Then you'd need to find the difference between the 1st term and 3:

3 > -7

- 10

So you'd write that as 3n - 10