This is a set of 4STEP Mathematics III+C problem sets and answer keys, covering vectors, complex number planes, and equations of curves. It is new and unused, but there are some wrinkles from storage (see photo 4). Please refrain from purchasing if you are concerned about minor imperfections. - Publisher: Suken Shuppan - Series: New Curriculum Thank you for viewing. We hope this will be helpful for your exam preparation. Please consider purchasing.