Sylvia has a jewelry collection of bracelets,necklaces,and earrings. She has 16 bracelets. The number of earrings is 2 times the number of necklaces. Which expression shows how many pieces of jewelry

Sylvia has a jewelry collection of bracelets,necklaces,and earrings. She has 16 bracelets. The number of earrings is 2 times the number of necklaces. Which expression shows how many pieces of jewelry she has in all? How many necklaces dose she have if she has 43 pieces of jewelry in all?