Final answer:
To find the ratio of Melena's necklaces to all her jewelry, divide the number of necklaces by the total number of jewelry items.
Step-by-step explanation:
To find the ratio of Melena's necklaces to all her jewelry, we need to divide the number of necklaces by the total number of jewelry items. Melena has 14 necklaces and 18 bracelets, so the total number of jewelry items Melena has is 14 + 18 = 32. The ratio of Melena's necklaces to all her jewelry is therefore 14/32.