Answer: 0.9765
Explanation:
The cumulative distribution function for exponential distribution for random variable x is given by :-
, where
is the mean of the distribution .
Given : On average, 5 customers arrive at the drive-up window of a fast-food restaurant every 4 minutes during the lunch hour.
Then 
Now, the probability that the next customer will arrive within three minutes :-

Hence, the probability that the next customer will arrive within three minutes = 0.9765
If you would like to see some English work the best place to see some is the library.
Answer:
When you completely forget to do the homework, and the teacher starts collecting it.
Explanation:
If you completely forgot to study for your final exam in math, you might feel despair when your teacher passes out the test. Despair can also refer to someone or something that causes you to worry or be sad. Unfortunately, some children are the despair of their parents. The verb despair means to lose hope.
I’ve read this story a few days ago the answer is it helps you understand what is going on and how the people feels and the mood in the story by using certain words and descriptions.
The answer is: a tragedy with humorous qualities and a tragedy with a dramatic ending