Help me plz I need help plz

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?

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]

Jeremy wants to determine the number of solutions for the equation below without actually solving the equation. which method should jeremy use?