Describe a situation where it would be better to use a fraction than a decimal or a percentage

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

What is the volume of a cone with a height of 6 cm in the radius of 2 cm

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?