Answer:
<em>x=</em><em>-</em><em>1</em><em>3</em>
Step-by-step explanation:
21-3.5x+14=7-7.5x-24
21+14-3.5x=7-24-7.5x
35-3.5x=-17-7.5x
35+17=3.5x-7.5x
<u>5</u><u>2</u>=<u>-4x</u>
-4. -4
x=-13
-1 is thy answer..............
<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:

Answer:
_____________Y= -2X-10 __________