8. Use the​ compound-interest formula to find the account balance​ A, where P is​ principal, r is interest​ rate, n is number of compounding periods per​ year, t is​ time, in​ years, and A is account balance.

8 Use the compoundinterest formula to find the account balance A where P is principal r is interest rate n is number of compounding periods per year t is time i class=