I would appreciate some help with #1 & 3.

Table 4-3 Tax Table * If Taxable Income Is At Least But Less Than Single Your Tax Is Married Filing Jointly 2,826 25,000 25,050 3,290 25,050 25,100 3,298 2,834 25,100 25,150 3,305 2,841 27,850 27,900 3,718 3,254 27,900 27,950 3,725 3,261 30,000 30,050 4,040 3,576 Chapter 4: Managing Income Taxes x l AAN B ? Do the Math