Posted by Salvany on Monday, February 7, 2011 at 9:02pm.
Jessica wants to accumulate $14,000 by the end of 5 yr in a special bank account, which she had opened for this purpose. To achieve this goal, Jessica plans to deposit a fixed sum of money into the account at the end of the month over the 5yr period. If the bank pays interest at the rate of 7% per year compounded monthly, how much does she have to deposit each month into her account?

Finite Mathematics  Reiny, Monday, February 7, 2011 at 9:10pm
i = .07/12 = .00583333
n = 12(5) = 60
let her payment be P
P( (1.00583333)^60  1)/.005833333 = 14000
solve for P 
Finite Mathematics  Anonymous, Friday, March 25, 2011 at 10:39am
Suppose 12 people arrive at a bank at the same time. In how many ways can they line up to wait for the next available teller?