please answer all parts and do not copy from the website and write the sloution step by step

Question 2 If the budget limit b is $800,000 and a 15% return is expected, Find the following: A).Sellect the economical project(s). (B) if the budget was increased to be $1,200,000 what would be changed regarding the selection of the most economical project/or projects. Use a spreadsheet to answer points A and B above. project Project life (Years) Intial investimated $ -250,000 -300,000 -550,000 -750,000 Annual NET cash flows $ 50,000 90,000 150,000 165,000 Salvage vaue, $ 45,000 - 10,000 100,000 200,000