Perform the Indicated Operations $\left[ \left( 1.1 x ^ { 3 } + 7.9 x ^ { 2 } + 4.2 \right) + ( 6.2 x - 2.3 ) \right] - \left( 3.7 x ^ { 2 } - x - 9.9 \right)$

question 115

Multiple Choice

Perform the indicated operations.
- $\left[ \left( 1.1 x ^ { 3 } + 7.9 x ^ { 2 } + 4.2 \right) + ( 6.2 x - 2.3 ) \right] - \left( 3.7 x ^ { 2 } - x - 9.9 \right)$

• A) \(1.1 x ^ { 3 } + 4.2 x ^ { 2 } + 6.2 x + 11.8\)
• B) \(12.5 x ^ { 6 } + 11.8\)
• C) \(1.1 x ^ { 3 } + 11.6 x ^ { 2 } + 5.2 x - 8\)
• D) \(1.1 x ^ { 3 } + 4.2 x ^ { 2 } + 7.2 x + 11.8\)

---

Definitions:

Flight Expenses

The energy cost associated with flying, which includes the metabolic rate required for maintaining powered flight.

V-Formation

A flight formation often seen in birds, especially migratory species, where individuals position themselves in a V shape to conserve energy and improve aerodynamics.

Scientific Conclusion

A final determination derived from the analysis of data and experimentation, summarizing the findings of a scientific investigation.

Low-Ranking Birds

Birds that occupy a lower position within the social hierarchy of their group.