calculate the future value given the following information: present value 500, number of periods =4 and interest rate 5%?

calculate the net present value with a required return of 10%, an initial investment of 30,000 and 10 years of payments of $6000 each?

calculate the net present value with a required return of 5% an initial investment of $45000 and cash flows of 12,000, 20,000, 10,000 and 6,000 for years 1 through 4?

calculate the net present value with a required 5%, an initial investment of 45,000 and cash flows of 9,000, 8,000, 15,000 and 20,000 for years 1 through 4?