Neil started a stamp collection with 12 stamps. Every week, he adds 4 more stamps to the collection. Which function f represents the relationship between the number of stamps (s) and the number of weeks (w)?

s = f(w) = 12 + 4w



w = f(s) = 12s + 4



s = f(w) = 12 + 4s



w = f(s) = 12w + s



s = f(w) = s – 12