The above is a great description of a Retail Sales Clerk, often referred to as a Sales Associate. However, I've been a Sales Associate for most of my life, over the past 30 years of so, and I would offer a different description; a second definition if you will. My experience of being a Sales Associate, sometimes with a wage, most times with a % commission, has been a pleasant one.
My kids were 6 and 7 when they got their 6 year molars but 6 is just an average age. Parents are familiar with when the 2 front teeth come in because that is what is so easily seen when a kid opens his mouth. Your kid may be as young as 10 when the 12 year molars come in. The wisdom teeth are suppose to come in as a young adult (between 18 and 25) but some people's wisdom teeth never come in because their mouth is too small for 32 teeth.
First Molars: 11-18 months of age: 9-11 years of age: Second Molars: 20-30 months of age: 9-12 years of age: Lower Teeth : Central Incisors: 5-8 months of age: 6-7 years of age: Lateral Incisors: 7-10 months of age: 7-8 years of age: Canines: 16-20 months of age: 9-11 years of age: First Molars: 11-18 months of age: 10-12 years of age: Second Molars: 20-30 months of age: 11-13 years of age