b. A few months after you purchase the machine, you realize that the revenue model is more complex. Although your costs estimates were correct, your revenue comes at three different levels: you get $1,500 per scan for privately insured patients; $1,100 for Medicare patients; and $650 for Medicaid patients. The breakdown of your patient group is about 55 percent privately insured; 30 percent Medicare; and 15 percent Medicaid. Now, what is the break even quantity