New PMP Question & Answers with explanation

Your project team is having a dispute with a vendor about whether a specific task is within the project’s scope. The scope statement does not provide implementation-level details that could resolve this dispute. There is no WBS, however, because the project sponsor insisted that the project be started right away without pausing to create standard project planning documentation. Who is at fault?
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Projects with adaptive life cycles use product backlogs to define a project’s scope. The product backlog is a set of:
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Due to the unexpected release of a similar product from a competitor, the Widgets International executive team has stepped up the pressure on the product team to release the Widget product three months earlier. The project manager uses what technique to shorten the schedule but maintain the project scope?
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While reviewing project procurement and accounting records for your project, you discover there is a pattern of unauthorized expenses by a specific resource. These expenses are not within the scope of the project and were somewhat camouflaged within a number of large and complicated expense reports. What do you do?
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What is the logical sequence of the Project Scope Management processes?
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