Write a compound inequality that represents each phrase.
1. All real numbers that are less than -3 or greater than or equal to 5.
2. The time a cake must bake is between 25 minutes and 30 minutes, inclusive.
3. All real numbers less than -2 or greater than or equal to 1.
4. All real numbers greater than or equal to −3 and less than 4.


Can someone solve all four problems?