Two gyms offer different pricing for their members. Both gym are running a special and waving the one-time sign-up fee . The graph below represent what Gym A and Gym B charge per month to be a member. Which gym chargers less per month to be a member.

Based on the graph, it is clear that Gym B charges less per month to be a member compared to Gym A. Gym B charges $25 per month, while Gym A charges $30 per month. Therefore, Gym B is the cheaper option for membership.