1.) $10,000 (at time 0) compounded annually for 5 years at 8% 2.) $50,000 (at time 0) compounded annually for 10 years at 10% 3.) $500 per year (beginning at the end of the first year) for 6 years compounded at 6% annually. 4.) $1,500 per year (beginning at the end of the first year) for 12 years compounded at 12% annually