New PMP Question & Answers with explanation

A project team is using iterations within the project to introduce new functionality and complete the project deliverables. What development life cycle is the project team following?
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Using a triangular distribution formula, calculate the cost estimate based on the following three-point estimates: Optimistic = $2,500, Most Likely = $3,500, Pessimistic = $7,200.
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All of the following statements are true regarding trend analysis except for which one?
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Which of the following processes are responsible for adjusting stakeholder engagement and communication strategies and plans, based on how the project is progressing and how the results compare to the plan.
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Mandatory dependency is also known by what other name?
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