An agency is having problems with personal phone calls made during working hours. Each minute of a personal call costs the agency $0.25 in wasted…

An agency is having problems with personal phone calls made during working hours. Each minute of a personal call costs the agency $0.25 in wasted wages. The agency decides to hire operators to monitor calls in order to attain the optimal number of personal calls (minimize total cost of personal calls).

Number of Operators