I believe you don't need to do any work at all except to divide everything by 25%.
I hope I helped you out!
Answer:
The marginal cost at the given production level is $49.9.
Step-by-step explanation:
The marginal cost function is expressed as the first derivative of the total cost function with respect to quantity (x).
We have that the cost function is given by

So, we need the derivative and then we’ll need to compute the value x = 100 of the derivative.

When x = 100, the marginal cost is

Your answer should be D, 163, hope this helps! :D
Answer:
A
Step-by-step explanation:
Im not 100% sure though... i havent taken this class in 3 yrs... xD