Determine if the data below represents a function. Explain your reasoning. (3, 2), (4,7), (8, 12). (10, 15)

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

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.

I’m really confused and need your assist me with this question i’ve never been taught