Solve the Problem $( a - 9 ) ( a + 9 )$

question 359

Multiple Choice

Solve the problem.
- $( a - 9 ) ( a + 9 )$

• A) \(a ^ { 2 } - 18 a - 81\)
• B) \(a ^ { 2 } - 18\)
• C) \(a ^ { 2 } - 81\)
• D) \(a ^ { 2 } + 18 a - 81\)

---

Definitions:

Job Cost

The total cost associated with creating a specific product or completing a specific job, including materials, labor, and overhead.

Predetermined Overhead Rate

A calculated rate used to allocate manufacturing overhead costs to individual units of production, based on estimated costs and activity levels.

Direct Labor-hours

The total hours of labor directly involved in producing goods, used as a measure for costing and operational efficiency.

Manufacturing Overhead

All manufacturing costs that are not directly related to the production of goods or services, such as factory rent, utilities, and equipment maintenance.