In each of the following independent situations, determine the amount

In each of the following independent situations, determine the amount of FICA (Social Security and Medicare) the employer should withhold from the employee's 2014 salary.
a. Harry earns a $50,000 salary, files a joint return, and claims four withholding allowances.
b. Hazel earns a $115,000 salary, files a joint return, and claims four withholding allowances.
c. Tracey earns a $190,000 salary, files a joint return, and claims four withholding allowances.