Brooke, a single taxpayer, works for Company A for all of 2022 , earning a salary of $64,000. Note: Round your intermediate and final answers to the nearest whole dollar amount. Required: a. What is her FICA tax obligation for the year? b. Assume Brooke works for Company A for half of 2022 , earning $64,000 in salary, and she works for Company B for the second half of 2022 , earning $114,000 in salary. What is Brooke's FICA tax obligation for the year