For the first one its a slope of -2/3
The second one is 4/5
and the third one is -1/7
Answer:
The appropriate solution is:
(1) 22.81 minutes
(2) 0.171
Step-by-step explanation:
According to the question, the values will be:
The service rate of guess will be:
= 
= 
The mean arrival rate will be:


The mean service rate will be:

(1)
The average time a cab must wait will be:
⇒ 
⇒ 
⇒ 
⇒ 
(2)
The required probability will be:
⇒ 
⇒ 
⇒ 
1,000 ¥ / $8 = 125 ¥ per $1
650 ¥ / 125 ¥ = $5.20
The answer is A. $5.20