Help pls i'm taking exam i give brainlest to corect anserwr

Which groups of people most directly benefited from song innovations in the song dynasty‘s open border policy?

Imagine you are driving down the highway and reading a sign that states save the planet don't litter which technique of policy enactment is being used

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