Assume that the odds against a certain horse winning a race are 5 to 2. If a bettor wins $14 when the horse wins, how much should the person bet to make the game "fair"?

Quadrilateral efgh was dilated with the origin as the center of dilation to create quadrilateral e'f'g'h'. the quadrilateral was dilated using a scale factor of 2.5. the lengths of the sides of quadrilateral efgh are given. what is the length of side f'g'?