Answer:
algebraic expressions use variables, in problems you can pick one thing and call it X and another thing and call it Y. whatever those two things you picked can equal some unknown thing.
Answer:
The primary characteristics of the two types of worlds are on opposite ends of the spectrum. Utopias have no disease, while dystopias have constant disease. It can be hard to create a utopia
Explanation:
Treasure Island, by Robert Louis Stevenson
