Question

If n is a term of the sequence 2, 5, 8, 11, ..., which expression would give the value of n?

2n + 1
2n - 1
3n - 1
n + 3

Answer 1

If n is a term of the sequence 2, 5, 8, 11, ..., which expression would give the value of n?
2n + 1
2n - 1
3n - 1
n + 3

When n=1, you should have 2
2n+1
2 (1)+1=3
3≠2

2n-1
2 (1)-1=1
1≠2

3n-1 ☆☆☆☆☆☆☆SOLUTION
3 (1)-1=2
2=2

n+3
(1)+3=4
4≠2