New PMP Question & Answers with explanation

Which of the following defines things the project manager needs to do regarding cost
Select one
While reviewing project performance, the project manager determines that the schedule variance is -500. What is the best thing to do
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One common way to compute estimate at completion (EAC) is to take the budget at completion (BAC) and:
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Which of the following information about the project would never be available during project planning
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Which of the following represents the estimated value of the work actually accomplished?
Select one