I’m now on my social studies homework i need answers to number 5 and 10

In 100,000 years, the rotation of earth will be slower by how many seconds?

The impact of science and technology on international relations

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