I dont understand this question how this can go into an excel file using the PV and FV functions in Excel 1) What is the accumulated sum of $500 a

I dont understand this question how this can go into an excel file using the PV and FV functions in Excel

1)   What is the accumulated sum of $500 a year for the next 10 years compounded annually at 5%?

2)   What is the accumulated sum of $35 a year for the next 7 years compounded annually at 7%?

3)   What is the present value of $70 a year for 3 years discounted back to the present at 3%?