Question

The first five terms of a sequence are shown below.

5, 9, 13, 17, 21

If the nth term of this sequence is represented by f(n), which of the following functions best represents this sequence?

f(n) = 5n - 1; n ≥ 1

f(n) = 5n + 1; n ≥ 1

f(n) = 4n - 1; n ≥ 1

f(n) = 4n + 1; n ≥ 1

Answer 1

do you know how to find the difference in arithmetic sequence?

Answer 2

no i dont...