Add or Subtract $$\left( r ^ { 3 } - 9 r s + 7 s ^ { 2 } \right) - \left( 9 r ^ { 3 } + r s - 3 s ^ { 2 } \right)$$

question 34

Multiple Choice

Add or subtract.
- $$\left( r ^ { 3 } - 9 r s + 7 s ^ { 2 } \right) - \left( 9 r ^ { 3 } + r s - 3 s ^ { 2 } \right)$$

• A) \(- 8 r ^ { 3 } - 10 r s + 4 s ^ { 2 }\)
• B) \(- 9 r ^ { 3 } - 9 r s + 4 s ^ { 2 }\)
• C) \(- 8 r ^ { 3 } - 8 r s + 10 s ^ { 2 }\)
• D) \(- 8 r ^ { 3 } - 10 r s + 10 s ^ { 2 }\)

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Definitions:

Manufacturing Overhead

Indirect factory-related costs that occur from manufacturing a product such as the cost of managing a factory.

Accumulated Depreciation

The total amount of depreciation expense that has been charged against a fixed asset since it was put into use.

Predetermined Overhead Rate

A rate calculated before a period begins, based on the estimated cost of manufacturing overhead and an allocation base, used to assign overhead costs to products.

Direct Labour-hours

The total time spent by workers who are directly involved in the manufacturing or assembly of a company’s products.