Find the Sum or Difference $$- \left( 6 x ^ { 3 } + x - 7 \right) + \left( 8 x ^ { 3 } + 4 x ^ { 2 } \right) - \left( 9 x ^ { 2 } - 5 x - 1 \right)$$

question 149

Multiple Choice

Find the sum or difference.
- $$- \left( 6 x ^ { 3 } + x - 7 \right) + \left( 8 x ^ { 3 } + 4 x ^ { 2 } \right) - \left( 9 x ^ { 2 } - 5 x - 1 \right)$$

• A) \(1 x ^ { 3 } - 3 x ^ { 2 } - 4 x + 8\)
• B) \(2 x ^ { 3 } - 5 x ^ { 2 } + 4 x + 8\)
• C) \(14 x ^ { 3 } - 13 x ^ { 2 } + 4 x - 8\)
• D) \(2 x ^ { 3 } + 5 x ^ { 2 } + 6 x - 8\)

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Definitions:

Fixed Cost

Expenses that remain constant regardless of production or sales volume, including rent, salaries, and insurance.

Total Cost

The total of all costs associated with producing goods or services, encompassing both constant and fluctuating expenses.

Variable Cost

Variable cost is a cost that varies directly with the level of production or sales volume, such as materials and labor costs.

Marginal Product

The extra output generated from increasing a particular input by one unit while all other inputs remain unchanged.