Leo thinks that 4 square rooted is equal to both 2 and -2 is he correct?

Fred has a total of 62 dvd and cd. if the number of cd is three more than two times the number of dvd, how many cd does he have?

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 ?

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)