SOMEONE PLEASE HELP ME

Suppose your business has a special checking account used just for paying the phone bill. The balance is $740.00 this month. Next month the balance will be $707.60, after that it will be $675.20, and on the third month the balance will be $642.80. Write a rule to represent the balance in the account as an arithmetic sequence. How many months can you pay your phone bill without depositing any more money in the account?

a(n)=740.00+(n-1)(-32.40) 23 months

a(n)=740.00-32.40n 23 months

a(n)=740.00+(n+1)(-32.40) 24 months

Question

SOMEONE PLEASE HELP ME

Suppose your business has a special checking account used just for paying the phone bill. The balance is $740.00 this month. Next month the balance will be $707.60, after that it will be $675.20, and on the third month the balance will be $642.80. Write a rule to represent the balance in the account as an arithmetic sequence. How many months can you pay your phone bill without depositing any more money in the account?

a(n)=740.00+(n-1)(-32.40) 23 months

a(n)=740.00-32.40n 23 months

a(n)=740.00+(n+1)(-32.40) 24 months