<s>[INST] Jonnie's car needs repairs. The total cost of the repair is $5000, which she cannot pay all at once. She has agreed to pay $2000 at the beginning of the month and then $300 the beginning of each month thereafter. Find the number of months required to make the full payment.In this problem, \(n\) is unknown but the value of the \(n\)th term is known, that is, \(a_{n}=5000\).[/INST]