Use the following tax rates and taxable wage bases: Employees' and Employer's OASDI—6.2% both on $118,500; HI—1.45% for employees and employers on the total wages paid. Employees' Supplemental HI of 0.9% on wages in excess of $200,000 was not applicable. During 2017, Amanda Hines, president of Dunne, Inc., was paid a semimonthly salary of $6,800. Determine the following amounts.

a. The amount of FICA taxes to withhold from her 9th pay

b. The amount of FICA taxes to withhold from her 18th pay

c. The amount of FICA taxes to withhold from her 24th pay