To finance a vacation in 4 years, Elsie saves $150 at the beginning of every month in an account paying interest at 12% compounded monthly. (a) What will be the balance in her account when she takes the vacation? (b) How much of the balance will be interest? (C) If she waits an additional year to start her vacation, and continues to save the same amount of money, how much more money does she have to spend? a) The balance in her account will be $| (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.)