New PMP Question & Answers with explanation

If earned value = 1,700, planned value = 2,000, and actual costs = 1,950, what is the CPI?
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A project manager meets with a key set of experts within her project team. They express concerns over recent cost estimates produced, insisting that they have not sufficiently considered alternatives. It is still early in the project life cycle. Which of the following is a valid tool or technique that can aid the project manager in addressing the team’s concerns?
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One of your subproject managers, a recent graduate with limited experience in managing projects, prepared a procurement SOW. When you were researching independent estimates, you discovered that your vendor’s proposals are way off of your expectations. You review the SOW and find that it was not detailed enough for the vendor to come up with an accurate estimate. Of the following options, which area of the PMI Code of Ethics and Professional Conduct does this question relate to, and which process does the independent estimates tool and technique belong to?
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Team charters are also known by what other name?
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Which of the following does a project manager use to build trust with stakeholders and overcome resistance to change?
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