provide step by step all the formulas. donot use chat gpt. answer only if you know earned value analysis Using earned value analysis find: 2b) How many weeks would the project, in the beginning of its 7th week, be behind or ahead of the schedule and when would be the estimated time to completion? Activity a b C d e Predecessor a C b&c Duration (weeks) 2 3 3 4 5 Budget Actual Cost $ $ 300 400 200 180 250 315 650 300 420 280 % Complete 100 100 100 50 20 []