Final answer:
The given sequence is 11, 7, 3, -1, -5, -9, -13, -17, ... The explicit rule for this sequence is f(n) = 11 - 4(n-1), where n represents the position of the term in the sequence.
Step-by-step explanation:
The given sequence is: 11, 7, 3, -1, -5, -9, -13, -17, ...
From the sequence, we can observe that each term is decreasing by 4.
So, the explicit rule for this sequence is: f(n) = 11 - 4(n-1), where n represents the position of the term in the sequence.