The second term of the sequence is 13

the term to term rule is "add 6"

what's the expression, in term of n, for the nth term in the sequence

13+6 (n-2)

Step-by-step explanation:

Considering that the second term is 13 and that the term to term rule is add 6, your expression would be 13 plus the result of multiplying 6 for the number in the sequence minus 2 because you already have the second term, so you don't have to count the first two terms in this part of the expression:

13+6 (n-2)

The ninth term in the sequence is 55