Question

The function p(d)=5⋅4d−1 represents the number of people who receive a certain e-mail on day d of an e-mail experiment.

What does the value 5 represent in this situation?




Five people received the e-mail on the first day of the experiment.


There are 5 people running the experiment.


Every day, the number of people receiving the e-mail increases by 5%.


Every day, the number of people receiving the e-mail increases by 5.

Answer 1

Answer: Five people received the e-mail on the first day of the experiment.

Explanation:

The given function that represents the number of people who receive a certain e-mail on day d of an e-mail experiment.

`p(d)=5.4^(d-1)`

Since, on first day d=1

Thus the number of people are
`p(1)=5.4^(1-1)= 5.4^0=5`

Therefore, Five people received the e-mail on the first day of the experiment.

That is, Option 1) is correct.