$$\text { Find the value of } \mathrm { df } ^ { - 1 } / \mathrm { dx } \text { at } x = f ( a ) \text {. }$$

question 57

Multiple Choice

$$\text { Find the value of } \mathrm { df } ^ { - 1 } / \mathrm { dx } \text { at } x = f ( a ) \text {. }$$
- $$f ( x ) = x ^ { 3 } - 6 x ^ { 2 } - 5 , x \geq 4 , a = 2$$

• A) \(- \frac { 1 } { 21 }\)
• B) \(- \frac { 1 } { 5 }\)
• C) \(- 12\)
• D) \(- \frac { 1 } { 12 }\)

---

Definitions:

Period Costs

Expenses on the income statement not directly tied to the production of goods, such as administrative and selling expenses.

Conversion Costs

The sum of labor costs and overhead expenses associated with transforming raw materials into finished goods.

Factory Overhead Costs

All the indirect costs associated with manufacturing, excluding direct materials and direct labor costs; includes costs such as maintenance, utilities, and rent.

Factory Overhead

All the indirect costs associated with the production process, such as utilities, maintenance, and salaries for production managers.