New PMP Question & Answers with explanation

You are in the middle of project executing and find you are running out of money due to unanticipated changes. What is the best thing to do
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Early in the life of your project, you are having a discussion with the sponsor about what estimating techniques should be used. You want a form of expert judgment, but the sponsor argues for analogous estimating. It would be best to:
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You provide a project cost estimate for the project to the project sponsor. He is unhappy with the estimate, because he thinks the price should be lower. He asks you to cut 15 percent off the project estimate. What should you do?
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This has been determined that six additional computers are needed to complete the project. The computers are an example of
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How close to actual costs should a definitive budget estimate be
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