Gina wants to take dance classes. she compares two dance studios to determine which has the best deal for her. dance world charges a rate for each class. toe tappers charges a rate for each class plus a one-time registration fee. the system of equations shown models the total costs for taking x classes at each.
dance world: y = 15x
toe tappers: y = 25 + 12.5x
how many classes would gina need to take for the total cost to be the same at both dance studios?