PLEASE HELP ME

7. What is the Range?

If g^-1(x) is the inverse of g (x) which statement must be true

Which must be true in order for the relationship △zyv ~ △xwv to be correct? zy ∥ wx ∠z ≅ ∠y and ∠w ≅ ∠x zv ≅ vy and wv ≅ vx ∠z ≅ ∠x and ∠w ≅ ∠y

What is the ratio fraction form of 25: 9