Allright So you know the answer cannot be A or D because Why.... It says in the text that ur finding the area and area is adding so it has nothing to do with multiplying ok
Last one of the first one try the last one first
Answer:
Total revenue =
dollars
Step-by-step explanation:

Integrate with respect to
.
∫
dx
Take 
Differentiate with respect to 

So,
∫
Use integration by parts: ∫f g dx = f∫ g dx-∫(∫g dx)f' dx
Therefore,
∫
=
∫
Put 

To find total revenue from the sale of the first 12 calculators, put 

Total revenue =
dollars
Answer:
Idk?
Step-by-step explanation: