If $1000 is deposited at the beginning of each quarter into an account that earns 8%, compounded

Question:

If $1000 is deposited at the beginning of each quarter into an account that earns 8%, compounded quarterly, how long until the account contains $31,000?
(a) State whether the problem relates to an ordinary or an due, and then
(b) Solve the problem?
Annuity
An annuity is a series of equal payment made at equal intervals during a period of time. In other words annuity is a contract between insurer and insurance company in which insurer make a lump-sum payment or a series of payment and, in return,...