The local fitness center is running two different monthly payment options to attract new customers. The options are shown below. What is the rate of change for the plans and at what number of visits would the plans cost the same amount?

Becca wants to mix fruit juice and soda to make a punch. she can buy fruit juice for $3 a gallon and soda for $4 a gallon. if she wants to make 28 gallons of punch at a cost of $3.25 a gallon, how many gallons of fruit juice and how many gallons of soda should she buy?