Answer: $4, 770
Aiden opens a savings account with $4500 at interest of 3%
t = 2 years
Using, simple interest formula

Balance = Principal + interest
Balance = 4500 + 270
Balance = $4,770
At the end of the second year, Aiden makes a deposit of $300
The total amount of money that will be in her account
Balance = 4770 + 300
Balance = $5, 070