tn = n2
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tn = 34 - 9n where n = 1,2,3,...
The given sequence is an arithmetic sequence where each term increases by 4. The first term (a) is 13, and the common difference (d) is 4. The nth term can be found using the formula: ( a_n = a + (n-1)d ). Therefore, the nth term is ( a_n = 13 + (n-1) \cdot 4 = 4n + 9 ).
The nth term is 7n-3 and so the next term will be 39
7n - 3
It is: 25-7n