Mayra deposits $4000 in an account at Bank A. Ezra deposits $2500 in an account at Bank B. Each bank offers a different interest rate, both compounded annually. The table shows the balances of the accounts over the course of 10 years. No additional deposits or withdrawals have been made. Using function notation, write equations to model the growth of each account as a function of time, t, in years. Then calculate each account balance at year 20.