8. If $12,000 is invested at an interest rate of 7.5% per year. Find the amount accumulated after three years if compounded (pg. 366) a. semi-annually A(t)=P(1+nr)nt b. continuously A(t)=Pert c. Find the APR for 7.5% interest compounded semi-annually (1+nr)n1 d. Find the APR for 7.5% interest compounded continuously er1 8. If $12,000 is invested at an interest rate of 7.5% per year. Find the amount accumulated after three years if compounded (pg. 366) a. semi-annually A(t)=P(1+nr)nt b. continuously A(t)=Pert c. Find the APR for 7.5% interest compounded semi-annually (1+nr)n1 d. Find the APR for 7.5% interest compounded continuously er1