Problem:
Jeannie is saving up to make a down payment on a new car. She currently has $1,450 in a savings plan that pays interest at the end of every month with an interest rate of 3% compounded monthly; however, she needs at least $5,000 for the down payment. If Jeannie can save $180 at the end of every month, then the number of months it will take her to accumulate $5,000 is.... (Please use finance formula).