Can you help me out with my HW, it's attached, I don't know how to do any of it and the textbook is ambiguous with its formulas to figure out these totals

Writing Jan 04, 2021

Can you help me out with my HW, it's attached, I don't know how to do any of it and the textbook is ambiguous with its formulas to figure out these totals. Can you explain it as well next to each answer & calculations? Thank you. The questions are highlighted in yellow, with the specific amounts needed to be calculated underneath?