Hearing depends on a series of events that change sound waves in the air into electrical signals. Your auditory nerve then carries these signals to your brain through a complex series of steps. Sound waves enter the outer ear and travel through a narrow passageway called the ear canal, which leads to the eardrum.
However, if your child is 21 or older and you pay him $1,700 or more during the year, you can withhold Social Security and Medicare taxes from his pay. If you choose not to withhold the taxes, you must pay your adult childâs Medicare and Social Security taxes yourself.
The estimate is 1.8 percent higher than the previous year. That equates to roughly $12,800 - $14,970 per child per year for a two-parent family with a median annual income between $61,530 and $106,540.The annual cost can vary based on factors like the child's age, the number of children in the family and the family's income and location.he estimate is 1.8 percent higher than the previous year. That equates to roughly $12,800 - $14,970 per child per year for a two-parent family with a median annual income between $61,530 and $106,540.