Final answer:
The explicit formula for the given sequence is f(n) = 7 + 3(n - 1).
Step-by-step explanation:
The given sequence is defined by the recurrence relation f(n + 1) = f(n) + 3, with f(1) = 7. To find the explicit formula for this sequence, we start with the initial term f(1) = 7. Then, for each subsequent term, we add 3 to the previous term. Therefore, the explicit formula for this sequence is f(n) = 7 + 3(n - 1).