We enter a room and immediately we can detect a single drop of perfume circulated in an area the size of a one-bedroom apartment, or see a candle flame 30 feet away on a dark night. This is due to:

Dominic and stacy each have a stamp collection. dominic has six fewer stamps than three times the number of stamps stacy has. dominic and stacy decide to give all of their stamps to their younger sister, mary. if stacy had s stamps, which expression represents the number of stamps that mary received? a. (3s − 18)(3s − 6) b. 2s − 18 c. 4s − 6 d. 4s − 18