On Multiple Choice questions, please explain and/or show your work as necessary. Other questions please show your work as well. _____1. Ten different...

Please help with the attached questions. Explain and show step-by-step process on how to solve. If using Excel for the calculations, please attach an Excel spreadsheet that shows how the calculations are done. If using an online calculator, please provide the link and a screenshot of the solution. Multiple choice questions please indicate why that is the correct answer. Thank you for your assistance!!