Answer:
Tn = 7 + (n - 1)*(6)
Step-by-step explanation:
The explicit rule is in the form: Tn = a + (n - 1)*(d), where 'a' is the first term and d is the common difference.
The first term in the sequence is 7, so 'a' is 7. The common difference is 6
(13 - 7) = 6, hence 'd' is 6.
Therefore, Tn = 7 + (n - 1)*(6)