Question 18 4 pts Reliable Cars has sales of $807,200, total assets of $1,105,100, and a profit margin of 9.68 percent. The firm has a total debt ratio of 64 percent. What is the return on equity? 21.03 percent 16.04 percent 13.09 percent 19.64 percent 18.56 percent The standard assumption in the single - server model is that there is an infinite number of customers and that customers will wait in line as long as it takes get served True O False