Can anyone help?i was absent and idk what the answers are

Scientific notation is important because astronomers and other scientist use this when they are working with very large or very small numbers. You already know that scientific notation is a system for writing and working with numbers that makes it much easier to deal with numbers that are very small or very large.
1. Scientific Notation expresses a value as the product of a number between 1 and 10 and a power of ten.
2. D
3. it makes very large or very small numbers easier to work with.
4. B and D
5. False
Hope these are correct :) Have a great day