Enter a formula using pv in cell b6 to calculate the present value needed for this pension fund. Cell b3 is the expected annual interest rate. Cell b4 is the total number of monthly payments that will be made. Cell b2 is the amount of each monthly payment. Payments will be made at the beginning of every period. Remember to express the pmt argument as a negative.

Customers arrive at rich dunn's styling shop at a rate of 3 per hour, distributed in a poisson fashion. rich can perform an average of 5 haircuts per hour, according to a negative exponential distribution. a) the average number of customers waiting for haircuts= customersb) the average number of customers in the shop= customersc) the average time a customer waits until it is his or her turn= minutesd) the average time a customer spends in the shop= minutese) the percentage of time that rich is busy= percent