7. One insurance plan costs $100 a month and has a $50 co-payment for all services. Another insurance plan costs $50 a month and requires patients to pay a 15% co-insurance. A customer is trying to decide which plan to purchase.

Which plan would the customer select with an anticipated $200 per month in medical bills?

What about $600 per month in medical bills?

Set up an equation to determine the monthly amount of medical expenses at which the consumer would be indifferent between the two plans.