Answer:
A. Used to keep track of very large and very small numbers during mathematical calculations.
Step-by-step explanation:
Some very large and small numbers are not easily represented in mathematical calculations. Using scientific notations help us to represent very large and small numbers to the power of 10.
It is -9 bro ..............
Hi! Sorry, it would've taken too long to type out, so I wrote it and have the attachment. Good luck!
