please I need help

a) Felix has a gross income of $18,000. What is his total tax due? b) Sarina made $42,000 in the calendar year. How much does she owe in federal taxes? c) Kennedy has a gross income of $95,000. What is her total tax due? d) Alex and Tory are married and filing jointly. Their gross income is $150,000. How much do they owe in federal taxes? 2020 tax brackets Indiv. Income Tax Rates Single Married Filing Jointly O to $19,750 10 percent O to $9.875 12 percent $9,876 to $40,125 $19,751 to $80,250 22 percent $40,126 to $85,525 $80,251 to $171,050 24 percent $85,526 to $163,300 $171,051 to $326,600 32 percent $163,301 to $207,350 $326,601 to $414,700 35 percent $207,351 to $518,400 $414,701 to $622,050 37 percent $622,051 and up $12,400 $24,800 Standard Deduction