You must ensure that all answers are ( 100% correct ) by solving each problem in at least two different ways which give the same result.
Both ways must be stated ; but you only need to produce your answer to only one of your methods.
All questions must be answered on ( Excel ) , ( On the same Excel file that I've attached).
You must explain all answers step by step in understandable manner ; and you must add Comments for each answer explaining what is going on in each step
11 freelancers are bidding on average $35 for this job
Hello I'm an engineer and I'm very used to do these things although I'm a newbie on this site. Be sure that I can do it with no errors. The quality is a priority for me. Only need more details or samples.