A bag of marbles contained 30 black marbles and 38 blue marbles (and no other marbles). For a game, marbles of each color were chosen from the bag. Of the 30 black marbles, 710 were chosen. Use this information to answer the questions below. (a) How many of the bag's marbles were chosen? (b) How many of the bag's black marbles were chosen? (c) How many of the bag's black marbles were not chosen?