Anyone can help with explantion and step by step calculation? Much appreciated! Based on 2017 Tax tables and Tax Rate Schedules

Determine the amount of tax liability in each of the following instances Use the appropriate Tax Tables and Tax Rate Schedules a. A married couple filing jointly with taxable income of $32,991 b. A married couple filing jointly with taxable income of $192,257 c. A married couple filing separately, one spouse with taxable income of $43,885 and the other with $56,218 d. A single person with taxable income of $79,436. e. A single person with taxable income of $297,784. f. A head of household with taxable income of $96,592. g. A qualifying widow with taxable income of $14,019. h. A married couple filing jointly with taxable income of $11,216 (For all requirements, use the Tax Tables for taxpayers with taxable income under $100,000 and the Tax Rate Schedules for those with taxable income above $100,000.)