1. go-ing
2. forever
3. barrier-reef
4. twenty-five
5. Brand-new
6. Illustration
7. Ice cream
Havent done this in years, so if I got any wrong, I apologize immensely, sorry for being a bad Sophomore boio.
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.
