Will mark brainliest! Please help! The first four terms of a sequence are shown below:
9,5, 1, -3
Which of the following functions best defines this sequence? (5 points)
1) f(1) = 9, f(n + 1) = f(n) - 4; for n 2 1
2) f(1) = 9, f(n + 1) = f(n) + 4; for n 2 1
3) f(1) = 9, f(n + 1) = f(n) - 5; for n 2 1
4) f(1) = 9, f(n + 1) = f(n) + 5; for n 2 1