Answer:
a) 
b) 
c) For this case we have the total sales $ 15 millions after t =4 months
d) 
e) This value represent the increase in the amount of sales in millions after t=4 months
Explanation:
For this case we have the following function for the sales

Part a
For this case we want to find the derivate of S respect to t and we got:

Part b
For this case we want to find the value of S when t = 4 so if we replace we got:

Part c
For this case we have the total sales $ 15 millions after t =4 months
Part d
For this case we just need to replace t=4 in the derivate and we got:

Part e
This value represent the increase in the amount of sales in millions after t=4 months
Answer:
it's 2 opportunity cost will increase
thank uh
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It should be noted that the aging structure data is important as it allows the rate of growth to be associated with the population in a country.
Your information is incomplete. Therefore, an overview of the topic will be given. There are typically three age structures which are:
- The children who are under 15 years old.
- The working-age who are between 15 - 64 years.
- The elderly ones who are 65 years and older.
It should be noted that an aging population lower the labor-force participation and slows down economic development in the country.
Learn more about aging population on:
brainly.com/question/14540910