Music, Inc., Natural Music Company, and Number One Music Corporation control 95 percent of the market for music CDs in a certain geographic areA. They agree to sell their products at the same prices, and exclude a fourth firm, Perfect Music Company (which controls the rest of the market). This is

Southeastern oklahoma state university's business program has the facilities and faculty to handle an enrollment of 2,000 new students per semester. however, in an effort to limit class sizes to a "reasonable" level (under 200 generally), southeastern's dean, holly lutze, placed a ceiling on enrollment of 1,600 new students. although there was ample demand for business courses last semester, conflicting schedules allowed only 1,440 new students to take business courses.the utilization rate for southeastern=%the efficiency rate for southeastern=%