Plz help me with this question

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

Write a similarity statement for the similar triangles. afgh ~ a

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