You need to have 10 reputation excluding the 100 rep account association bonus in order to answer protected questions. So you just need a bit more rep to hit 110 and you'll be good.
See the last point in What is a “protected” or "highly active" question?What is a “protected” or "highly active" question?
Users with 10 or more reputation can answer a protected question. However, the +100 account association bonus is ignored for this check, so you must have earned 10 or more reputation on that specific site to answer a protected question.