Could you please answer question #6-7

Problem #6 Bubba earned a total of $221,100 for 2018. How much FICA tax is his employer required to withhold from Bubba's paychecks for the year? Problem #7 Shanita is a self-employed event planner. She has net earnings (profit) from her business of $63,220. Her self-employment taxes for the year are? Problem #8 Venkat is age 32, single, and reported AGI of $67,000 in tax year 2018. He is an active participant in his employer's pension plan. What is the maximum deductible IRA contribution he can make in 2018