Hello, slanno!

Let = quarterly interest rate.Bank Ceble: 8.4% (effective p.a.) effective interest rate per year

c) Scott chooses to invest with bank Ceble. Find their quarterly interest rate.

If he invests dollars for a year, his final balance is: .

Since the effective rate is 8.4%.

. . his final balance is: .

Equate [1] and [2]: .

. . . . . .

Therefore: .