What number makes the equation true? Enter the answer in the box. 9 = 18 : ​

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

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 ?

Which function has the domain x> -11?