Fátima tiene 50 € ahorrados y quiere invitar a sus amigos al cine por su cumpleaños. Si tiene seis amigos y el cine cuesta 8 €, ¿cuánto dinero le tendrá que pedir Fátima a su madre para poder pagar la invitación?

Could somebody me with this radical simplification?

The graph of a hyperbola is shown. what are the coordinates of a vertex of the hyperbola? (0, −4) (−3, 0) (0, 0) (0, 5)

The architect's side view drawing of a saltbox-style house shows a post that supports the roof ridge. the support post is 8 ft tall. the distance from the front of the house to the support post is less than the distance from the post to the back of the house. how far from the front of the house is the support post positioned?