The formula for determining the nth term of an arithmetic sequence is expressed as
Tn = a + (n - 1)d
Where
Tn represennts the value of the nth term
a represents the first term
d represents the common difference
n reprsents the number of terms
Looking at the given sequence,
a = 3
d = 11 - 3 = 8
Therefore, the function that represents the sequence is
Tn = 3 + (n - 1)8