Which function below represents the arithmetic sequence 3, 7, 11, 15...?

f(n) = 4 + 3( n – 1)

f(n) = 4 + 3 n

f(n) = 3 + 4 n

f(n) = 3 + 4(n – 1)

The correct function that represents the arithmetic sequence 3, 7, 11, 15... is f(n) = 4 + 4(n – 1)