Answer:
C
Step-by-step explanation:
Because equation C is telling us that the amount of caffeine is less than 400.
Hope this will help
The maturity value is 4827 and if needed interest value is 12.
One factor of 12 is 2. The other factors of 12 are 3, 4, and 6.
ANSWER
The turning point is

EXPLANATION
The function given to us is

At turning point,

So we need to differentiate the given function and equate it to zero.
We using the chain rule of differentiation, we obtain,

We equate this to zero to obtain,

We divide through by 3.

We solve for x to get,


We substitute this x-value in to the function to obtain the corresponding y-value of the turning point.



Therefore the turning point is

C is the correct answer.