Review 1. In tennis, an ace is a legal serve that cannot be returned and is not even touched by the opponent's racket. Cecelia has an excellent serve. Last week, Cecelia hit 7 aces in 2 matches. a. If she plays 6 matches in the regional tournament, how many aces should she expect? Show your work. b. If she plays 10 matches in the regional tournament, how many aces should she expect? Show your work.​