Here's the direction I was given:

Write an expression for the sequence in each table.
1 - 8
2 - 13
3 - 18
4 - 23
5 - 28
n - ___

Would I write n = 28+5 ?

each number moves by +5, so the nth term will be 5n+3.

checking: fifth term, 5*5+3=28