Please tell me how to do problem 1, and please give me the correct answer, thank you so much

1. (9 points) Using the following 2018 Marginal Tax Brackets Married Filing Joint $0 $19,050 $77,400 $165,000 $315,000 $400,000 $660,000 Single Filers Rate 10% 12% 22% 24% 32% 35% 37% $0 $9,525 $38,700 $82,500 $157,500 $200,000 $500,000 Assuming no other considerations, deductions, or income, what is the amount of tax paid by a married couple who earned $195,000 between them this year and file their taxes as married filing joint? a. What will the marginal tax bracket be for married individuals who are filing a joint return, where she made $85,257 last year, and he made $79,748 during the same time period? b. Bill is a single taxpayer who made $42,658 last year, what is his total tax paid and his actual or effective tax rate (sometimes also called the average tax rate)? c