Stephanie was injured in a car accident and was rushed to the emergency room. She recelved stitches for a facial wound and treatment for a broken finger. Under Stephanle's PPO plan, emergency room care at a network hospital is 80 percent covered after the member has met an annual deductible of $300. Assume that Stephanie went to a hospital within her PPO network. Her total emergency foom bili was $850. a. What amount did Stephanie have to pay? b. What amount did the PPO cover