Hi everyone i want some for the answers with i give. pls mark an i will give u points. this is not math question

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Abcd is a square. what is the measure of angle bac

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.