Answer: The system of
equations that best models this situation are
y = 30x + 120
z = 75x + 15
Step-by-step explanation:
Let x represent the number of months for which John Urschel wants to use either plans of the gym.
Let y represent the total cost of using plan A for x months
Let z represent the total cost of using plan B for x months.
Plan A has a $120 sign-up fee and costs an additional $30 per
month. This means that the total cost of using plan A for x months is expressed as
y = 30x + 120
Plan B costs $75 per month with a signup fee of $15. This means that the total cost of using plan B for x months is expressed as
z = 75x + 15