Health service finance class

I need someone to assist with this test..i have attached a copy of the final study guide...its dealing with hospitals,providers and how they are paid etc for services they render.  There will be some calculating problems see example below..

A hospital has contracted with an HMO to provide acute care inpatient services for $1,000 per day, subject to a 10 percent withhold. The proposed budget for inpatient services is based upon expected utilization of 600 days per 1,000 members at $1,000 per day, or $600,000 per 1,000 members. The hospital risk pool will be split equally between the hospital and a primary care physician group. If only 450 days per 1,000 members were utilized in the first year, how much would the hospital be paid per 1,000 members? (

A not-for profit nursing home has total expenses of $20 million. Sales tax in the state is 7%. Expenses are broken down into salaries ($12 million), supplies ($6 million), and pharmacy ($2 million). The benefit received by the nursing home from the sales tax exemption assuming that pharmacy items are exempt from state sales tax is? (Points : 10)