Riddle me this

If Zac is one of 6 kids, and all of those kids are married and have kids, how many dinner rolls do I need to bake for Thanksgiving dinner?  ( That's 14 adults + 14 kids = 28 people)

Also if Sally is three times older than John, John is 4 years older than Carl, and Carl has a 5 year old sister named Tammy, how old is Carl? j/k but really, how many rolls?