Final answer:
The first term in the sequence is 7, and the recursively-defined function is f(1) = 7 and f(n) = f(n - 1) + 6 for n ≥ 2. The next term after 25 in the sequence is 31.
Step-by-step explanation:
To find the recursively-defined function for the sequence 7, 13, 19, 25,..., we first identify the pattern between consecutive terms. We see that each term increases by 6 when compared to the previous term.
Thus, the recursive function has a base case of f(1) = 7 and a recursive step where each term is 6 more than the previous term, which gives us f(n) = f(n - 1) + 6 for n ≥ 2.
The next term after 25 in the sequence is 25 + 6, which equals 31.