Find the area of the pool

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?

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =