<h2>Answer:</h2>
The marginal cost when x=8 is:
375
<h2>Step-by-step explanation:</h2>We know that the marginal function for a cost function C(x) at x=a
is given by:
C'(x) at x=a
Here we have the cost function C(x) as:
Now we find the derivative of C(x) with respect to x.
i.e.
( Since,
)
Hence, we get:
