1. The problem statement, all variables and given/known data If you are given the marginal cost function: C'(q) and the problem asks what would the cost be to increase production from x units to y units, then, would that just be given by c'(y) - c'(x) ? 2. Relevant equations 3. The attempt at a solution Not entirely sure about this problem, but since marginal cost is = to the cost of producing one extra good, then it seems that would make sense, but i just need clarification to whether we need the TC (Total cost) function as well?