Answer:

Step-by-step explanation:
The marginal cost function, C'(x), is the derivate of the cost function, C(x).
Therefore, we can obtain the cost function by finding the integral of the marginal cost function:

Where 'a' is a constant and represents fixed costs. If fixed costs are $3,000, the cost function is:

Answer: 17 families
Step-by-step explanation:
To answer the problem you take 13 and minus -2 to get 15 and divide 15 by 5/4 and you get 12.
Hope I help. :)