Answer:
the answer is 5
Step-by-step explanation:
Answer:
The value is
Step-by-step explanation:
From the question we are told that
The number of customer that enter the tellers every 5 minutes is 
Generally the probability that exactly three customers enter the queue in a randomly selected five-minute period is mathematically represented as

=> 
=>
12x^2 + x -12 I think . Good luck
Answer:

Step-by-step explanation:
Given

--- scale factor
Required
Determine A'
This is calculated as:



