Bring prime rib to room temperature. Rub the prime rib with minced garlic, salt and pepper. Insert a meat thermometer into the thickest part. Roast for 15 min. at 500 degrees, then reduce heat to 350 degrees. Allow 15 min. per pound for rare and 20 min per pound for medium rare. Take out of oven when temperature reaches 120 degrees for rare or 135 degrees for medium. Let rest 15 min. before carving. Roast will continue to cook while it is resting.